Quote:
Originally Posted by TooCool5
Before top tier gas you had to run premium to get the detergents you needed to keep the injectors clean,
87 top tier solves this (same detergents).
If my car is not running right on 87 then I have to solve the problem.
Could be moisture in the tank, dirty throttle or MAF, fuse pull etc etc.
Those who say "doesn't work on the V6" are wrong, I have proved it over and over.
Putting 93 in is just a band aid approach. (hello black exhaust tips)
Spent many Yrs in the Automotive field traveling to auto assembly lines, I know my cars like the back of my hands.
Each should do what gives them their own comfort factor.
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Correct on port injection engines and keeping injectors clean. We don't recommend iver use of injector cleaners added every few tank fulls as we rebuild/flow match/clean injectors here with the ASNU system and to much cleaner can damage the injector internals.
Now on a DI engine, the fuel (as far as valves goes) never touches the intake valves so the coking issue is huge, even at 15-20k miles. Anyone that has remove their intake manifold can attest to their valves looking like this w/out a catchcan installed:
http://www.google.com/search?q=intak...w=2021&bih=875
This is a compilation of pictures submitted by techs all over the work dealing with the coking.
On port injection we can remove heads with 100-200 k miles that used top tier fuels and the intake valves still look like new.
