I have gas.....
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Senior User
Joined: Oct 2006
Posts: 102
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From: Issaquah, WA
I have gas.....
So my buddy was telling me that my truck (4.6liter) is supposed to run on regular gas. I always put medium or premium in it, and he said i'm wasting my money. It seems to run better on better gas, but that could also just be in my head....
Is the engine set up to run on the cheap stuff? I know this is in the manual, but my truck didn't come with one : (
What are ya'll running in your tanks?
Is the engine set up to run on the cheap stuff? I know this is in the manual, but my truck didn't come with one : (
What are ya'll running in your tanks?
Elder User
Joined: Jul 2003
Posts: 531
Likes: 0
From: North Richland Hills, TX
Your friend is correct. Truck was designed to run on 87 octane. Anything higher is unnecessary. You'll get a lot of different opinions on this, so it'll be up to you to make that choice. Myself, I run the regular (87) and don't have any problems.
Elder User
Joined: Nov 2001
Posts: 892
Likes: 1
From: Duluth, MN
The only difference in octane ratings is the ignition temp. The higher the rating the higher the ignition temp. Higher octanes are used in higher compression engines. You engine was designed to run on 87 and anything else is just a waste of money. and if you do get a performance upgrade, you problably have carbon in the cylinder causing the needed higher compression.
Post Fiend
Joined: Apr 2006
Posts: 12,281
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From: Saskatoon Saskatchewan
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Joined: Jul 2008
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Back when I was in AZ I had some detonation issues (real quiet ping once in a while). To make what could be a long story short, both the advisor and the technician told me to only use 87 in the truck. Running higher octane gas didn't really make a difference in anyting but my wallet.
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