Is Royal Purple 20W-50 HPS (with Synerlec, not the Wal-Mart RP) still a favorite among members with high miles ( 120,000+ mi. ) on their TTs ? What is it about this weight/viscosity that makes it a good choice ?
Follow Ups
RP 20W-50 HPS motor oil...still a fave with members ? - TTkeeper10:09:29 09/08/18