kungfuliu

on my emissions test during inspection?

MikTip

How old is your engine oil?

Oxygen sensors?

eh-4Q1.8

Ummm, your saying that dirty fuel injectors don't make a difference?

MikTip

dirty fuel injectors are very rare.

Plus "dirty" injectors will show other more noticable symptoms with the engine, vise only in the emissions.

Dirty oil will cause a car to fail emissions.

What we "need" to know here, is what was the readings of the emission test? Namely the HC,CO,CO2, & N0x readings, and which was high, or over limit?

These will aid in troubleshooting of why the vehicle failed.

Mrkrad

pretty much the same as throwing bottle of that junk in.

kungfuliu

i have about 3000 miles on my oil, so it's good

MikTip

Premium gasoline?

kungfuliu

always

eh-4Q1.8

then just to make sure the injectors are in good condition.

MikTip

already contain high levels of detergents, to prevent fuel injector problems.<ul><li><a href="http://www.chevron.com/brands/prodserv/fuels.asp">http://www.chevron.com/brands/prodserv/fuels.asp</a</li></ul>