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Just incase there are any confusions about pump octane grades

K85 Octane

K85 Octane

People Fatigued
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Here in CA we have 87, 89, 91. I have spoke with someone at 76 and Chevron. They both store 87 and 91. At the pump, these get mixed together to create 89.

Same sh1t, one octane is not "cleaner" than another. If your car runs 87, use 87. Unless you're running Hypertech etc programmers that force you to run 91 for pinging reduction. POS hypertech, just a cheap way to do programming. This octane info is OLD news but I still find people without a clue, brainwashed maybe, into thinking otherwise.

This is a 76 tanker I pulled next to at a red light.
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kool, now I have a clue! :thumb:
 
and dont run prem from the pump if you realy love your 2 stroke stuff.

i swaped to vp c12 race gas aspr my engine builder . and wow :eek1: what a diffrence in every aspect of how that motor runs. :waytogo:

ya its not cheep like pump gas but i will push my quad now before i ever put pump gas in it again. :deal:
 
sweetk30 said:
and dont run prem from the pump if you realy love your 2 stroke stuff.

i swaped to vp c12 race gas aspr my engine builder . and wow :eek1: what a diffrence in every aspect of how that motor runs. :waytogo:

ya its not cheep like pump gas but i will push my quad now before i ever put pump gas in it again. :deal:
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yep, C12 is nice, ran a 50% mix for my quad, but it was 12 bucks a gallon last I saw. Plus, it's damn near impossible to get race gas in CA nowadays. All the dealerships stopped carrying it cause of recent regulations put on THEM. I just run 76 station 100 octane, one station has it about 10 miles from me, at the pump.
 
In my experience carbeurated vehicles prefer the premium over the 87 stuff. I've even mixed in a little octane booster with premium before a wheeling trip and i was spinning tires out of the gas station on a 400 with 175k miles and 30 years on it :D. My little dodge 2.0 carbed doesnt seem to notice much of a difference in power between 87 and 91 so i just alternate.
 
gotblazers said:
In my experience carbeurated vehicles prefer the premium over the 87 stuff. I've even mixed in a little octane booster with premium before a wheeling trip and i was spinning tires out of the gas station on a 400 with 175k miles and 30 years on it :D. My little dodge 2.0 carbed doesnt seem to notice much of a difference in power between 87 and 91 so i just alternate.
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Yea man, my truck gets up and goes a little better on 91, especially when i have my holley on there (off for a good cleaning).
You can smell the difference in the exhaust too.
 
Likewise, the longer gas stays in the ground the more octane rating it will lose. I don't have the time table for the break down but I believe more then 2 weeks and 89 will be closer to 87 then 89.

My new boat calls for 89 but it only has 9.5:1 compression ratio. When I ask indmar why a motor with only 9.5:1 would need 89 the reply was this.

The motor will do fine on 87 but the longer the gas sits in the ground or your tank it will lose octane rating. If you buy 87 that's been in the ground for 2 weeks and then sits in your boat for a week you're probably not getting the performance from the engine that it can give you. Buying 89 will insure that after sitting you'll be getting at least 87.
 
hahaha
where I live, the tankers all drop by the big stations every other day, sometimes more often. The Big Chevon station near me said every night. wow, that's 9,000 gallons if the tank is empty.

I'd say the 91 octane helps you run a more advanced spark timing. That would help with some power and more than likely run a little cooler. Maybe carbed vehicles benefit cause they can't compensate for fuel changes. Computers can.
 
Try not to buy any gas while the tanker is dropping. it stirs up all the crap in the tank . One of the pilots around here had 15 inches of water in a 20.000 gal tank
 
berg76 said:
Thanks to ethanol...
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The savior of the planet according to hippies:rolleyes:

My brother is on the verge of bankruptcy, yet he still puts 92 octane gas in his 15 year old car that requires only 87, insisting that it's getting him better fuel economy and power:doah: I have given up on trying to explain that it does him no good, and that all he is doing is pouring more money into his car than he needs to. He wonders why I don't put 92 into my Yukon, doesn't ping or stutter so no need to.
 
Government just recently decided that all gas at all pumps will be required to contain at least 15% ethanol in stead of the current 10% by like 2013 or 14. I work in an ethanol plant and even I think that sucks:confused: That is all gas, 87 on up at every station:doah:
 
ethanol and oxygenized here in CA,

oxygen enriched, or whatever they call it

and as far as 92 octane getting better millage, he should do the math. Even 5 miles per gallon better (no way) doesn't account for having to pay 20+cents more per gallon lol.
 
Agreed that carbed engines will run better with 92, especially over 9.5:1.

I use 92 in my truck with a ZZ4; it's a noticeable difference in power when I use the 92 over 87, and it keeps it from dieseling when it gets hot.

Ironically, the only time I used 87 was when I ran out of gas and needed a rescue. :haha:
 
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