On Jun 29, 8:05 pm, jim beam <spamvor...@bad.example.net> wrote:
> not b.s. yes, cleaning can help problems like leaky injectors and to
> some degree, excess carbon in egr systems.
>
> detergent content varies by gasoline brand. stick to good brands,
> preferably "tier one".
>
> you can also run cleaner through the system yourself for minimal cost.
> avoid the "flush" service sold by places like monkey lube.

These cars see only Shell gas (except when not available during longer
trips). Tegger's confirmation that I should see a mileage drop if
something's wrong makes me feel the cars are very OK.

B.t.w., I noticed on this forum that Chevron is touted as being the
best gas in US, mostly because of the Techron additive. Is it so much
better than 76 or Shell? And, what's up with the joker regarding the
gas sold in California being dirty ?!

Thanks