What Gas Grade does your 80 drink?

[jvazquez53]

87 and every 3000 miles, one bottle of fuel system cleaner, Slick 50, Seafoam etc.

 

[Monty231]

I use ethanol free 87.

 

[Ozdunc]

I run 98 with the advanced timing mod.

Nowadays 91 has 10% ethanol, which makes the truck run like shi-ite.
And the price gap between 95 and 98 isn't that great and since its not a DD it gets the best.

 

[rockrod]

85 in and around the denver metro and the mountains. no issues with pinging.

 

[superjuice]

I run 91-93, first time I put in 87 i got a CEL P0401. I doubt it was a coincidence so i put in the good stuff now. I changed the o2 sensors and vsv and no problems since. I've put 15000 miles on it in 3 years so its not a huge deal for me

 

[antor]

Steady diet of Costco regular, the only time it gets other brands is when traveling.

x2

 

[prarietlc]

87 for me, no knocks!

 

[hakalugi]

87 octane as well. higher octane does not equal higher quality, it's about resistance to detonation from higher compression, via , er, higher compression engines or power adders (aka: turbo or supercharger).

no pinging with 87 so i'll keep using it.

 

[Stormin Norman]

I go by mileage and there was no significant mpg difference, so I stuck with the cheap stuff.

 

[jr vong]

Im using 87 with no prob

 

[skintunes]

87 is all that's needed in a jap stock 4/6 cyl - Unfortunately everything is ethanol here and they don't have to post the content- at least it's down to $3.59 - can't get better than 13 mpg mixed drive - when i visit my parents in PA I use their Costco 87 and get noticeably better mileage

 

[FunkLord]

In a big, low-revving naturally aspirated engine with stock timing? Regular of course.

Higher octane gas does not have more hydrocarbons, so it doesn't give more power than regular. If the engine is designed for regular gas, putting premium in it will not increase the performance or gas mileage. If anything it will decrease because higher octane gas is more resistant to ignition. The only time filling up with premium gas gives you better results is if the timing is changed. Do 80s have knock sensors that retard the timing? I know some cars that knock on regular gas have sensors that automatically retard the timing to protect the engine, resulting in less power/efficiency.

 

[fjc8871]

I used 87 until I filled w/ 91 by mistake. I can feel the difference as the 80 runs smoother and I feel it to be a bit more responsive. I have filled up with 91 since but will more than likely go back to 87 to save $$ and I think I am having CAI syndrome (Louder is faster).

 

[landcruisnman]

9 1

 

[97FZJ80]

i keep it random where ever im at what ever i grab

 

[86tuning]

Cheap as I can find...Mines all about quantity over quality.

QFT quoted for truth

i'm in the 87 crowd. haven't tried 94 which is the only blend of 100% gas, because i'm too cheep.

haha.

 

[Frankencruiser]

Ethanol free regular if i can find it. Mine seems to get a mpg or two better on that. If not it's the cheapest gas I can find.

 

[packetstormin]

89 Chevron

 

[Dimiscus]

85 in and around the denver metro and the mountains. no issues with pinging.

X2 and same location.

 

[firetruck41]

Steady diet of Costco regular, the only time it gets other brands is when traveling.

x3. I always go with the cheapest, and there is a Costco nearby, thankfully. Otherwise if out of the area, I usually go with ARCO or Safeway (grocery gas).
Everyone on here follows Toyota OEM recommendations, might as well stick with 87 as spec'd...