ok to run a tii on regular gas?

[Guest Anonymous]

i have a '73. what do you guys recommend?

[Guest Anonymous]

may have to retard timing a bit which could rob you of some performance.

Ultimately it will run the best on supreme but $$$$. I run my tii 10:1 on supreme.

[Guest Anonymous]

I "always" run high octane fuel in my '73tii, and my '76 also (although not as important)...I look at it this way...for the small additional cost, I'm alleviating any worries about "pinging" and the lesser fuel additives in regular gas than is normally supplied in higher octane fuels. Fuel injection requires "clean" fuel also. I believe the original owner's manual specifies "high octane petrol"! :-)

John

'73tii

'72tii "Hugo" being restored

'76

[Guest Anonymous]

I've always only used Chevron Supreme because it contains "Techron" which has been demonstrated to reduce that gummy buildup on the intake valves. Well, I think it works. When I pulled my intake system off to ship the engine off for some work, the intake and exhaust valves were clean, no stuff on them whatsoever. I didn't look inside the head.

I'm running 10:1 with a 121 head.

--Jerry

[Guest Anonymous]

Why chance it?? The $$ diff is not much.