Quote:
Originally Posted by TiAgX5
FYI, the query into "A B Able Truck" came about when his first post was a copy/paste of the requirements of fuel additives/octane boosters on older engines, not this thread at all.

That copy and past was done because it was very detailed and it very much relates to newer engines. How many years has BMW (and others) been dealing with CCV (PCV) and carbon issues? How many people have had valve stem seals replaced unnecessarily? Yes, Bmw may at one time had valve guide issues - do you really think they'd tarnish their reputation by continually using inferior valve stem seal (if ever)? I've attached 2 SIB's (couple years old) related to my cut & paste (which all were a partnership effort with Chevron).

SI B13 05 06 9/06
SI B13 01 07 8/10 (These are just what I have on hand)