Do you use regular gas(#87) to fill up 2016+ Acura Rdx?
07-25-2017, 01:37 PM
#81
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horseshoez 4 president!
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07-25-2017, 01:39 PM
#82
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07-25-2017, 01:40 PM
#83
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Meanwhile, OP is long gone sitting back enjoying his 
as hilarity ensues... 
as hilarity ensues...
07-25-2017, 01:43 PM
#84
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07-25-2017, 02:31 PM
#85
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I will give you another completely different example of crazy logic. A friend of mine has a 2012 Chevy Silverado. As he was cruising down the highway a few weeks ago, the curtain airbags spontaneously deployed. He is lucky to be alive as he was understandably stunned when this happened(and blinded when his glasses were thrown from his face by the airbag). He never left the roadway and there was no impact to his car before/during, or after the event. GM sent a third party to examine his truck to try and figure it out. They reported back today and claimed no responsibility for the issue as: 1) the tires were slightly larger than stock(same size as stock but a different brand) and rubbed the wheel well in the front (how could this cause airbags to deploy?) 2) there was some grass in the undercarriage (this is a 4x4 diesel work truck, it doesn't stay on asphalt all the time...) and 3) there is a shielded power cable running under the door jam to a subwoofer box in the backseat. They say this is where the sensor for the airbag is located. The door airbags are still intact, only the side curtain airbags deployed. Lawyer is the next step....
07-25-2017, 02:36 PM
#86
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One thing to keep in mind vis-à-vis the A/C condenser/engine temperature relationship is the efficiency of the radiator. If the radiator is large/efficient enough to hold engine temperature constant at the thermostat's rated temperature for the conditions you drive in, then the condenser will have no effect on detonation or any other engine lifespan limiting conditions.
Said another way, if the thermostat in your car is set to 190°F, the odds of the heat from the A/C condenser causing the coolant temperature to exceed that is pretty remote.
Said another way, if the thermostat in your car is set to 190°F, the odds of the heat from the A/C condenser causing the coolant temperature to exceed that is pretty remote.
07-25-2017, 02:50 PM
#87
Chapter Leader (Southern Region)
Pretty pompous for a Mod.... You have no idea of what my education is as far as engineering is concerned. And yes, having a higher specific output per liter is most certainly going to increase the octane necessary. Not getting your point there. I brought up oil change interval as another example of lack of logic by a manufacturer.
I will give you another completely different example of crazy logic. A friend of mine has a 2012 Chevy Silverado. As he was cruising down the highway a few weeks ago, the curtain airbags spontaneously deployed. He is lucky to be alive as he was understandably stunned when this happened(and blinded when his glasses were thrown from his face by the airbag). He never left the roadway and there was no impact to his car before/during, or after the event. GM sent a third party to examine his truck to try and figure it out. They reported back today and claimed no responsibility for the issue as: 1) the tires were slightly larger than stock(same size as stock but a different brand) and rubbed the wheel well in the front (how could this cause airbags to deploy?) 2) there was some grass in the undercarriage (this is a 4x4 diesel work truck, it doesn't stay on asphalt all the time...) and 3) there is a shielded power cable running under the door jam to a subwoofer box in the backseat. They say this is where the sensor for the airbag is located. The door airbags are still intact, only the side curtain airbags deployed. Lawyer is the next step....
I will give you another completely different example of crazy logic. A friend of mine has a 2012 Chevy Silverado. As he was cruising down the highway a few weeks ago, the curtain airbags spontaneously deployed. He is lucky to be alive as he was understandably stunned when this happened(and blinded when his glasses were thrown from his face by the airbag). He never left the roadway and there was no impact to his car before/during, or after the event. GM sent a third party to examine his truck to try and figure it out. They reported back today and claimed no responsibility for the issue as: 1) the tires were slightly larger than stock(same size as stock but a different brand) and rubbed the wheel well in the front (how could this cause airbags to deploy?) 2) there was some grass in the undercarriage (this is a 4x4 diesel work truck, it doesn't stay on asphalt all the time...) and 3) there is a shielded power cable running under the door jam to a subwoofer box in the backseat. They say this is where the sensor for the airbag is located. The door airbags are still intact, only the side curtain airbags deployed. Lawyer is the next step....
2) Thinks more HP == more octane, yet fails to believe knock that pulls timing is related to lost performance and HP.
3) It's completely logical... Marketing (just like when BMW sold buyers on forever fluid)
4) GM and 3rd party definitely have a case. Vibration caused by mods are well known to set off airbag sensors. Whether it was an ill planned roll cage, exhaust modification, etc. Many cases of shade tree mods causing the sensors to go. Could the design been more robust, maybe, but the best your friend can hope for is a settlement.
07-26-2017, 07:44 AM
#88
Pro
1) I'm going to guess you're not a mechanical engineer..
2) Thinks more HP == more octane, yet fails to believe knock that pulls timing is related to lost performance and HP.
3) It's completely logical... Marketing (just like when BMW sold buyers on forever fluid)
4) GM and 3rd party definitely have a case. Vibration caused by mods are well known to set off airbag sensors. Whether it was an ill planned roll cage, exhaust modification, etc. Many cases of shade tree mods causing the sensors to go. Could the design been more robust, maybe, but the best your friend can hope for is a settlement.
2) Thinks more HP == more octane, yet fails to believe knock that pulls timing is related to lost performance and HP.
3) It's completely logical... Marketing (just like when BMW sold buyers on forever fluid)
4) GM and 3rd party definitely have a case. Vibration caused by mods are well known to set off airbag sensors. Whether it was an ill planned roll cage, exhaust modification, etc. Many cases of shade tree mods causing the sensors to go. Could the design been more robust, maybe, but the best your friend can hope for is a settlement.
07-26-2017, 08:13 AM
#89
Pro
Another example- the Honda Pilot/Ridgeline and Acura TLX/MDX. All use the same 3.5l DI V6. The Acura version puts out slightly more power(10hp) and torque(5 ft/lbs). The Acura's require 91 and the Honda's need 87 octane. This makes some sense as maybe the Acura is tuned to allow the extra hp/tq with higher octane. In the case of the RDX, we have no bump in output over the Accord. So why would it need higher octane?
07-26-2017, 09:02 AM
#90
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I think you should stick to 87 oct.
It works for you. Keep on keeping on.
It works for you. Keep on keeping on.
07-26-2017, 09:19 AM
#91
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octane threads
07-26-2017, 11:29 AM
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09-02-2019, 03:47 PM
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09-02-2019, 03:53 PM
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09-03-2019, 11:46 AM
#96
Just to show how daring I am, I use Mobil 1 oil even though my owner's manual recommends Genuine Acura oil!!! I'm just thankful that there's no Genune Acura gasoline for them to recommend.
09-04-2019, 12:28 PM
#97
Advanced
Regular gas-37k. Always. Unlless you run your engine so hard and hot and hear a ping under accelleration...regular.
This is not a 426 Max Wedge with 13.5:1 compression.
This is not a 426 Max Wedge with 13.5:1 compression.
Last edited by Mo_Green; 09-04-2019 at 12:32 PM.
09-04-2019, 04:21 PM
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09-13-2019, 06:06 PM
#100
Burning Brakes
A while back I compared an Accord V6 with the RDX V6.
Both had the same displacement, same compression, etc yet the Accord had "Regular recommended" and the RDX calls for 91. Go figure.
Proof would be to know the motor number of each engine.
Both had the same displacement, same compression, etc yet the Accord had "Regular recommended" and the RDX calls for 91. Go figure.
Proof would be to know the motor number of each engine.
09-13-2019, 06:27 PM
#101
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Not proof at all. Unless they were both say, a J35A8, then simply comparing displacement and compression ratio is not proof.
09-13-2019, 08:39 PM
#102
Burning Brakes
Better yet, both these numbers look the same. So what changed that requires going from Regular to Premium.
https://acurazine.com/forums/2g-rdx-.../#post16394305
Last edited by Tech; 09-13-2019 at 08:49 PM.
09-13-2019, 08:57 PM
#103
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OK, so how many V6 Honda/Acura engines did they produce in 2017?
Better yet, both these numbers look the same. So what changed that requires going from Regular to Premium.
https://acurazine.com/forums/2g-rdx-.../#post16394305
Better yet, both these numbers look the same. So what changed that requires going from Regular to Premium.
https://acurazine.com/forums/2g-rdx-.../#post16394305
- J35A7
- J35Z2
- J35Z8
- J35Y1
- J35Y2
- J35Y4
- J35Y5
- J35Y6
- Cam timing
- Ignition timing
- ECU programming
- Compression ratio
09-13-2019, 08:57 PM
#104
"So what changed that requires going from regular to Premium?"
Tuning and electronics. That said, high octane is just suggested, not required. There a thousands of Acuras running around just using regular that are just fine.
When researching the purchase of a TSX a few years ago, I read many threads both here and other forums about this. The gist of it all was that you might get slightly
less MPG or slightly less acceleration from using regular, but no big deal.
Tuning and electronics. That said, high octane is just suggested, not required. There a thousands of Acuras running around just using regular that are just fine.
When researching the purchase of a TSX a few years ago, I read many threads both here and other forums about this. The gist of it all was that you might get slightly
less MPG or slightly less acceleration from using regular, but no big deal.
09-15-2019, 08:44 AM
#105
Burning Brakes
So what was the engine number of a 2017 Accord V6 and a 2017 RDX.
09-15-2019, 08:47 AM
#106
Burning Brakes
Also it might be an Acura thing. My neighbor's 2003 TL S calls for premium. He has run the car on regular its entire life of over 150,000 miles.
Last edited by Tech; 09-15-2019 at 08:49 AM.
09-15-2019, 09:53 AM
#107
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- J35Y1 -- 10.5:1 -- 278/252 HP/Torque -- 2017 Honda Accord (Automatic)
- J35Y2 -- 10.0:1 -- 278/251 HP/Torque -- 2017 Honda Accord (6-Speed Manual)
- J35Z2 -- 10.5:1 -- 273/251 HP/Torque -- 2017 Acura RDX
09-16-2019, 08:12 AM
#108
Burning Brakes
10-17-2019, 04:43 PM
#109
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So far, I use premium all the time. The computers will adjust timing for lower octane fuel, and you’ll get a slight power loss. Unless you are into stop light drag races, you’ll never notice th difference.
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10-21-2019, 11:10 AM
#111
Chapter Leader (Southern Region)
Telling customers that the car can use regular vs telling them it needs premium sells..
Marketing asks the chief engineer.. will the car perform on regular.. technically it can.
You're not going to notice but a minor dip in fuel efficiency and a some unmissed hp.
But the consequence of that lost efficiency is unburnt fuel getting thrown down the pipe.
There's no magical sensor to tell the car to pull timing because there's regular in the tank.
Knock occurs and timing is pulled. Knock is bad. Will your car survive? of course..
But if you expect to drive your car into the ground, that will be sooner than later.
Some of us hold onto our cars for the long haul.
Marketing asks the chief engineer.. will the car perform on regular.. technically it can.
You're not going to notice but a minor dip in fuel efficiency and a some unmissed hp.
But the consequence of that lost efficiency is unburnt fuel getting thrown down the pipe.
There's no magical sensor to tell the car to pull timing because there's regular in the tank.
Knock occurs and timing is pulled. Knock is bad. Will your car survive? of course..
But if you expect to drive your car into the ground, that will be sooner than later.
Some of us hold onto our cars for the long haul.
... timing, octane, and load are all associated.
Just basic thermo proves that an object under a higher temp curve will fail sooner.
The fact is.. if the engine is pulling timing even on 93.. running 87 isn't a great idea.
Everything runs hotter, so more fuel is thrown down to try to keep things in check.
If you're leasing or going to dump your vehicle on some chump when warranty goes out, go for it.
Just basic thermo proves that an object under a higher temp curve will fail sooner.
The fact is.. if the engine is pulling timing even on 93.. running 87 isn't a great idea.
Everything runs hotter, so more fuel is thrown down to try to keep things in check.
If you're leasing or going to dump your vehicle on some chump when warranty goes out, go for it.
08-24-2022, 12:35 PM
#112
Intermediate
This same fundamental Honda engine with similar compression ratios and MPFI are spec'd to run regular gas in Honda branded models so, with the cost of fuel lately, I've switched from 91 to 87...
...and after going through 4 tanks of regular gas in combined city/highway driving, I haven't noticed a difference in fuel consumption or highway passing ability so far.
...and after going through 4 tanks of regular gas in combined city/highway driving, I haven't noticed a difference in fuel consumption or highway passing ability so far.
08-24-2022, 08:59 PM
#113
Burning Brakes
Well the Owners Manual states "recommended" not "you have to".
So I have used regular 87 for ages. I do not "load" the engine. In other words, I do not pull a trailer, I drive on relatively level ground and I don't race to the next red light (don't even do that in the Porsche). My last fill-up got me 438 miles and there was still gas in the tank.
So I have used regular 87 for ages. I do not "load" the engine. In other words, I do not pull a trailer, I drive on relatively level ground and I don't race to the next red light (don't even do that in the Porsche). My last fill-up got me 438 miles and there was still gas in the tank.
08-25-2022, 02:52 PM
#114
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It that a typo? Was this all highway? We have done this once or twice but was 100% highway and didn't have much left in the tank.
08-25-2022, 07:41 PM
#115
Burning Brakes
08-26-2022, 06:44 PM
#116
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Okay - that makes more sense and have done the same. I thought it was more of a regular thing for you or maybe it is base on your drive. Not so much here.
09-09-2022, 07:03 PM
#117
I gotta ask. What's your average speed? I stopped using regular once premium went over $4.00. I noticed my mpg went up once I started using regular, but no decrease in performance. I get close to your mpg. 392 miles and cruise about 65-70 mph. I know if I cruise at 55 mph I would probably get close to you 438.
09-09-2022, 07:20 PM
#118
I gotta ask. What's your average speed? I started using regular once premium went over $4.00. I noticed my mpg went up once I started using regular, but no decrease in performance. I get close to your mpg. 392 miles and cruise about 65-70 mph. I know if I cruise at 55 mph I would probably get close to your 438.
10-08-2023, 08:53 PM
#120
Intermediate
I regularly hit 100 mph on my way to work and the gas pedal hits the floor at least twice a day when I drive. I have driven my 2013 RDX this way since it was new and have 90k miles. I only use premium gas and the car still runs like it’s new. I have a VCM muzzler that I need to install but my VCM doesn’t kick in much because I drive like the car is on fire. I only use Mobil 1 synthetic, change the oil and trans fluid every 7k miles. I do both at the same time. My transmission still shifts as well as the day I bought it. I have driven a newer version of my 2G RDX and I think mine shifts better. I also use drilled and slotted rotors with ceramic pads. I don’t know how long the car will last but it still drives great and looks great. The only service I have ever paid for was the timing belt, water pump, belt tensioner and serpentine belt change. I took it to the dealer so they could do that and all the inspections. They said the car was in amazing shape and needed nothing.