View Poll Results: What kind of gas do you use?
91
547
41.66%
92
68
5.18%
93
612
46.61%
I'll put anything in there CHEAP!
86
6.55%
Voters: 1313. You may not vote on this poll
The mother of all 2IS gas discussions. Premium or Mid-grade (merged threads)
03-29-10, 09:48 PM
#796
Okay since I bought my lexus Ive changed the oil once and put full synthetic oil in it and I always fill my tank up with premium gas.
My question is am I throwing away my money? I know that on the gas cap door it says use premium unleaded fuel only but what are the advantages in paying nearly 15% more for premium fuel. Ive heard that on the highway premium fuel gets better milage and wont make your engine ping. Ive also heard that the lower octane fuel will affect power, im not a race car driver so Im not concerned if i lose some power.
Also I put full synthetic oil in my car and it was 80bucks and to get regular oil is 36bucks. What are the advantages of getting full synthetic oil? Im not racing my car nor am i driving it in harsh conditions so is it worth paying more?
My question is am I throwing away my money? I know that on the gas cap door it says use premium unleaded fuel only but what are the advantages in paying nearly 15% more for premium fuel. Ive heard that on the highway premium fuel gets better milage and wont make your engine ping. Ive also heard that the lower octane fuel will affect power, im not a race car driver so Im not concerned if i lose some power.
Also I put full synthetic oil in my car and it was 80bucks and to get regular oil is 36bucks. What are the advantages of getting full synthetic oil? Im not racing my car nor am i driving it in harsh conditions so is it worth paying more?
06-30-10, 02:39 PM
#798
Driver School Candidate
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question on gasoline of 2010 IS250
my girl knew that the car only takes premium gasoline, but at the gas station she didnt know which was premium. so she put PLUS gasoline instead of SUPREME. would this affect the car by any chance? would it damage the engine etc.etc.? please help
06-30-10, 03:06 PM
#802
When i bought my car, a very experienced german sales told me , some of his customers put in plus all the time because premium is getting too expensive. He told me, i can do it for a couple of months, it is okay. But longer than that, its no good for the engine. So ur perfectly fine =D
06-30-10, 06:44 PM
#805
the car is designed to run on 91 octane or higher
lower than that it's likely to knock.
Since it's a modern car it has knock sensors, which then detect the knock and retard the timing to protect the engine from destroying itself.
After a while, since it's programmed for 91, it begins to add timing back... then it'll knock again. And retard the timing again.
Keep putting in regular and it'll keep doing this over and over.
Doing a tiny bit of damage each time. Over 1 tank of gas it's not gonna be anything to worry about, especially if you drive it easy.
It'll probably still run for a good long time, just not as long as if you used what you're supposed to, and certainly not as well
lower than that it's likely to knock.
Since it's a modern car it has knock sensors, which then detect the knock and retard the timing to protect the engine from destroying itself.
After a while, since it's programmed for 91, it begins to add timing back... then it'll knock again. And retard the timing again.
Keep putting in regular and it'll keep doing this over and over.
Doing a tiny bit of damage each time. Over 1 tank of gas it's not gonna be anything to worry about, especially if you drive it easy.
It'll probably still run for a good long time, just not as long as if you used what you're supposed to, and certainly not as well
06-30-10, 07:14 PM
#807
Tech Info Resource
iTrader: (2)
07-01-10, 04:04 AM
#809
A tank of lower octane will not make ANY difference unless the engine is put under extreme load like, pulling a trailer up hill. If you feel funny about it you can let the tank go down to half and fill it up with 91+. Other wise don't give it a second thought!
Koz
Koz
09-21-10, 11:16 AM
#810
Pole Position
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