Will my 2001 GMC 2500 8.1l 496 handle 87 octane?
#1
Will my 2001 GMC 2500 8.1l 496 handle 87 octane?
I was thinking today as I was filling up the tank on my 2001 GMC 2500 with an 8.1L 496, I use 93 octane just to stay on the safe side. My question is this, is 87 octane safe to use on my truck? I find it pointless to keep putting 93 octane if I can get away with 87 and get more for my money.
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Virtually all modern vehicles can run 87. These vehicles have knock sensors. If you are getting pre-combustion because of lower octane the computer will adjust the timing to compensate. I had a Corvette, owners manual said premium fuel only, I could not tell a difference in power between 92-93 or 87, so I ran 87. No problems.
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fixx
yes it will run with it but,,,,with 93 octane it burns slower and in return you will bet more mpg,the 87 octane will burn faster and hotter...i use to burn 93 and i went to midgrade..
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Octane rate is for the rate at which the fuel is prone to detonation. The higher the rating the less prone to detonation, more of a proper, complete burn. The knock sensors are to pick up just that, when that happens it cuts timing, in turn making a less efficiante burn, can def hurt gas mileage ESP if you are towing something.
John jr
John jr