What octane do you run in your K5?
CK5
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What octane do you run in your K5?
- Thread starter wazzabie
- Start date
93 if I get it from a run of the mill station but usually I try to get 100% gasoline which is 87 close to me.
Google says propane is 104-112 octane.
85. Most of you guys don't even see the stuff. High altitude.
Whatever is cheapest at the store next to my house.
I have to run 91. at least
I run 25-30 gl of 91 and 10 to 15 gl of AV gas.WWhen it's hot outside it'll still ping
I run the cheapest.
Mine are all stock so no need for higher octane.
The engines I mean.
The trucks are modified
Mine are all stock so no need for higher octane.
The engines I mean.
The trucks are modified
90, ethanol free
Highest, i tried the cheaper stuff and maybe, placebo but the truck seemed to run weird. Went back up to 91 seems better. I don't drive it enough to worry about using the higher octane and it being a financial burden.
Stock tbi. Cheapest crap I can buy! LOL
What ever is cheap, big block drinks to much
According to the emissions decal the spec is for 91 octane or higher as found in the lower right corner of the decal.
in 78 91 was regular, premium was 94 or better, I remember buying Chevron silver pump 104 for my XR 75 in 76-77. Full of lead too 
Today 87 is regular. So is 1978 91 regular equivalent of 87 regular today?in 78 91 was regular, premium was 94 or better, I remember buying Chevron silver pump 104 for my XR 75 in 76-77. Full of lead too
I'm going with about 40.....
Cetane that is! In the red flavor, you know cuz it's farm use! Also some filtered waste oil depending on if I have any.
Cetane that is! In the red flavor, you know cuz it's farm use! Also some filtered waste oil depending on if I have any.
No it is 87 octane.
87 for now until I increase the compression.
