[12Ounce]

Pushing 350k miles on my '99 3.8. No Berryman's. No Seafoam. No catch can. No pinging. ( I do like to add up to one ounce of fresh motor oil per gallon of gasoline at fill-ups, when I think of it.)

Yes, Ford could have done a better job of designing the return of crank case PCV "waste" back into the inlet air stream. Could have done a better job of keeping the returning waste oil in the form of a mist, instead of letting it gather into liquid droplets that can clog the EGR jets. But besides that fault, its a workable induction system. Just needs to have flawless inlet manifold tightness ..... and exact engine timing. Cam positioning timing and crank ignition timing ... as well as properly functioning fuel supply ... injectors. The cam postion sensor should be set using the proper gauge. The crank pos sensor is not adjustable, but if the harmonic balancer has slipped there will be problems. By using a feeler rod against the piston top (cyl #1) the timing marks on the crank pulley can be confirmed.

The inlet air filter must be well maintained to keep the crankcase supplied with fresh air.

Of course, if the engine is in poor repair ....too much piston by-pass, leaking valve stem seals and the like, old igniton cables, EGR not correct, etc ... then pinging may not be correctable. I like to reseat valves and replace valve stem seals at least by 200k miles or so. The injectors are bench-cleaned and lubricated at the same time. If this engine reaches 450k miles, and I'm still able, I will plan on tearing down engine again.