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View Full Version : Octane range?



90ToyAllTrac
11-23-2016, 07:20 PM
Pump 94, 97, 102 octane just became available locally. After I started using 91 octane my All Trac hunka chunka issues went away almost completely but are pretty much back to where they were before 91 octane. Should I start with 94 or 97? Is 102 too much for a stock 3SGTE ?

Nitro_Alltrac
11-23-2016, 08:43 PM
With the turbo, I think you'd be fine using the 102 if it's not prohibitively expensive.

With forced induction, you can't really go wrong with more octane.

90ToyAllTrac
11-23-2016, 10:24 PM
As touchy as my car is I should probably start with the 94. Hopefully they will still be selling the stuff in 4 months. I just took the battery out for the winter. They literally just finished installing the pump. Right at the beginning of winter. When they will sell the least. Smooth move. :P

underscore
11-24-2016, 02:11 AM
Go to 94, that's the highest I can get here but the only thing I'll put in my GTFour. What were you using before you could get 91?

Nitro_Alltrac
11-24-2016, 03:42 PM
What brand is the station? I'm just curious. Around here 93 is the best we can do as far as I know.

ChrisD
11-25-2016, 01:45 PM
94 is sufficient, and ideal. If you wanted to start running some more extreme boost pressures the higher octane might make sense, but not so much closer to stock. Go 94.

90ToyAllTrac
11-25-2016, 01:58 PM
What brand is the station? I'm just curious. Around here 93 is the best we can do as far as I know.

It's a Cenex and service station. For years 91 was the highest available within like 300 miles. I don't know how long ago but there used to be a local non chain shop on the outskirts that sold over 100. Before switching to 91, due to my own ignorance I admin, just used 87. I never owned a turbo before and was just used to putting in the cheapest in everything I ever had. It's still wierd how the problems went away almost completely after switching to 91 and then eventually came back to same regularity.

90ToyAllTrac
11-25-2016, 02:07 PM
94 is sufficient, and ideal. If you wanted to start running some more extreme boost pressures the higher octane might make sense, but not so much closer to stock. Go 94.

Good to know, Thanks