Charlie, You're exaggerating the problem. Just use a non-Red Line lube with only a GL-4 rating (no other ratings on the container) Bob Helt In a message dated 4/8/2015 10:23:06 A.M. US Mountain Standard Time, virtualvairs at corvair.org writes: This has been one of the most confusing threads EVER to perpetuate itself on VV, imho ...