I like Shell Rotella 15w/40 and I add ZDDP (zinc) to help protect the flattop lifters and cam...

Others will be along to address pressures...

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD