Castrol Ex-CEO: oil changes are a scam
11-07-2010, 09:18 PM
#42
Why? 95% of the people out there arent in the severe maint schedule. Hell i am in it and dont follow it, and there is no need to. All of my oil analysis have shown that the oil is just fine.
I just spent the day lapping the car. The oil in there was new and will most likely stay in there the next 10k or until i pull the motor out this winter. Today the car spent the better half of its lap time at 7k rpm.
I just spent the day lapping the car. The oil in there was new and will most likely stay in there the next 10k or until i pull the motor out this winter. Today the car spent the better half of its lap time at 7k rpm.
11-07-2010, 09:48 PM
#43
Senior Moderator
My car gets tracked often, and idles all day yes all day. Its easier on the car and me to leave it running. I shut it off for lunch and the occasional bathroom break. Even on conventional Dino oil 8-10k intervals were ok. I had/have the oil tested often and have never had less than a 2.8 TBN or a bad report.
3k is a scam and a waste of resources and money. Especially on modern oils and motors.
11-08-2010, 12:57 AM
#44
I dont consider stop and go severe unless your a Taxi driver.
My car gets tracked often, and idles all day yes all day. Its easier on the car and me to leave it running. I shut it off for lunch and the occasional bathroom break. Even on conventional Dino oil 8-10k intervals were ok. I had/have the oil tested often and have never had less than a 2.8 TBN or a bad report.
3k is a scam and a waste of resources and money. Especially on modern oils and motors.
My car gets tracked often, and idles all day yes all day. Its easier on the car and me to leave it running. I shut it off for lunch and the occasional bathroom break. Even on conventional Dino oil 8-10k intervals were ok. I had/have the oil tested often and have never had less than a 2.8 TBN or a bad report.
3k is a scam and a waste of resources and money. Especially on modern oils and motors.
11-09-2010, 11:25 PM
#47
Suzuka Master
You should bring them donuts or pizza or something every once in a while for that. It can go a long way when you need the service writers or manager for something costly.
11-10-2010, 08:24 PM
#48
Team Owner
The big thing to worry about is the filter. I have a friend who only changes his oil once a year-and he changes his filter as needed throughout. We took the motor out a few weeks ago to play around with it (boring out, etc), and it looks brand new after two years of this method.
If you drive nicely (not to high revs), and don't do to much stop and go driving, I think oil should last a fairly long time. doing oil changes at 3000 miles is somewhat pointless, wasn't that rule developed in the time of the muscle car era? I think a monsterous V8 that races a lot would need more oil changes than an old woman driving a 4cyl accord. I would tend to think that in stop and go, 5000 with dino oil is good, and highway, 10,000 is good. With synthetics, not sure..
A high strung 4 banger is harder on oil than a large V8 at the same power level.
Over time, additives get depleted, oil oxidizes and shears, and then you have the contaminate load. If I didn't have the contaminate load to think about, I would run my Redline to 15,000 miles no problem since it won't shear, oxidize, and it has tons of zddp, moly, and other additives.
11-10-2010, 11:50 PM
#49
If you read closely, just about everything except for extended freeway driving will qualify as severe duty. They would be better off listing what does not qualify.
Define excessive... There is no one size fits all. You can't say bi-annual for mineral, etc, etc. Mercedes, Porsche, and BMW have a much larger capacity than your average car. This is how they get away with the long intervals. There are so many variables.
A high strung 4 banger is harder on oil than a large V8 at the same power level.
Define excessive... There is no one size fits all. You can't say bi-annual for mineral, etc, etc. Mercedes, Porsche, and BMW have a much larger capacity than your average car. This is how they get away with the long intervals. There are so many variables.
A high strung 4 banger is harder on oil than a large V8 at the same power level.
reason why a say such a huge majority of people should follow the severe schedulewhen you dump 9 quarts of oil in a 3.0 liter in an BMW X5, JUST to get it to the full mark (for a fair comparison, the 2JZ in the Supra only takes like 5-6 quarts of oil, and both are inline 6's) (btw it was also Mobile 1, as per the oil cap lol), you wounder why you are able to do longer oil changes on them
yes indeed 4 bangers are harder on oil, especially when they normally take less oil to begin with, let alone revving higher for the same amount of power output (and turbo's are more commonplace on 4's, which skyrocket's the wear and tear on the oil when driven like they should be
)
11-11-2010, 05:53 PM
#50
Senior Moderator
11-11-2010, 09:26 PM
#51
Someday, an RS6 Avant+
I go about 6-8K Km a year, and I do my oil change once a year, along with the filter. 5w-50 this time. For an H6, I'm doing real well and not consuming any oil.
11-12-2010, 07:21 AM
#52
The Dumb One
iTrader: (1)
I mean, how many people have driven as far as they could on E and seen how far they get? 
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