87/89/91/93
10-31-2010, 06:10 PM
#1
87/89/91/93
Around where I live, I see lots of 87, 89 and 93 octane. Not 91. I opt for 93 in for other cars I own that "recommended" premium fuel, but is that really necessary? I ask only because my dealer told me I can get by with even regular 87??? I'm sure there must be a similar thread on this...so please direct me in the right direction. Otherwise, I'd love your input. Thanks.
10-31-2010, 07:02 PM
#2
Advanced
Join Date: Feb 2010
Location: FAIRFAX VIRGINIA
Age: 47
Posts: 84
Likes: 0
Received 0 Likes
on
0 Posts
TSX engines, well, all small high performance japanese engines, have high compression ratios. That is why you need high octane gas. Bottom line, just use 93.
10-31-2010, 07:16 PM
#3
Instructor
The sales guy told me to use regular gas too... However, after reading many posts, I came to the conclusion that using 93 octane will give you better performance and gas mileage.
10-31-2010, 07:27 PM
#4
Some people have used regular "without ill effects." At the end of the day, it's your car, so do what you think is best. I prefer to go with what the manual says, so I use premium.
10-31-2010, 07:44 PM
#5
^...forget what the sales guy says. He probably never even read the manual, lol! We all(atleast those of use who take the time out to read it!) know that the manual says to use premium!
11-01-2010, 12:50 AM
#7
Three Wheelin'
Premium is recommended in the manual. Like other have mentioned, this car has a high compression ratio (11:1), logic tells me it would work better with higher octane gasoline.
For a price difference of $0.20/gal or less, I calculated even with a full tank every week (drive a lot), the cost difference is less than $200 a year.
For a price difference of $0.20/gal or less, I calculated even with a full tank every week (drive a lot), the cost difference is less than $200 a year.
Trending Topics
11-01-2010, 06:43 AM
#8
you will definitely notice a difference. the ECU will begin to retard the timing once the regular fuel starts to cause engine knock. if you drive like a grandma, you probably won't notice. but once you start trying to get more performance out of it, you will be very disappointed.
11-01-2010, 07:06 AM
#9
it's a car-drive it
you will definitely notice a difference. the ECU will begin to retard the timing once the regular fuel starts to cause engine knock. if you drive like a grandma, you probably won't notice. but once you start trying to get more performance out of it, you will be very disappointed.
11-01-2010, 10:00 AM
#10
you will definitely notice a difference. the ECU will begin to retard the timing once the regular fuel starts to cause engine knock. if you drive like a grandma, you probably won't notice. but once you start trying to get more performance out of it, you will be very disappointed.
This.
It's not as bad as leaving the AC on, but you'll notice some lack of power.
11-01-2010, 09:15 PM
#13
whats wrong with the AC guys : ( ?
11-06-2010, 11:12 PM
#16
Instructor
Join Date: Jun 2010
Age: 34
Posts: 107
Likes: 0
Received 0 Likes
on
0 Posts
Premium is recommended in the manual. Like other have mentioned, this car has a high compression ratio (11:1), logic tells me it would work better with higher octane gasoline.
For a price difference of $0.20/gal or less, I calculated even with a full tank every week (drive a lot), the cost difference is less than $200 a year.
For a price difference of $0.20/gal or less, I calculated even with a full tank every week (drive a lot), the cost difference is less than $200 a year.
I calculated a milage:cost ratio a while back.
While using premium highest I've found is 95, I get a better mile:dollar ratio then I do using 87-91. (For some reason I can't find 93 in Canada, but I can find 95!)
Just use premium, pay more, get more.
11-07-2010, 04:20 AM
#17
Though I use a mix to try and maintain 91 octane (by mixing 89 and 93) in my 05, my wife has used 87 for years (1400 miles a week) in her 07 with no discernible ill effects. She averages 31-32 highway mpg. So..... although I don't play for that team, I'm pretty sure there's no difference. And anyone that thinks they can tell the difference in performance......, well it's probably the same crowd that can tell the difference after they change their oil. They must have a way more sensitive ass than I do (for that "seat of the pants" feel).
