We'll he proved what he knows.....sand wouldn't go through an injector. WAY, way too big.

Its sounding quieter because the additive subtly chages the combustion charectoristics of the fuel.

If you didn't pop test and balance them originally, you might want to do so now. And if you did, you might want to do so again.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)