Engine Oils to Use in Vintage Engines with Flat Tappets and Cams

PETRO CAN
Duron –E 10/30 1230 ppm of ZDDP
this is CJ-4 Diesel

CHEVRON
Delo 400LE 10/30 or 15/40
both 1300 ppm ZDDP
this is CJ-4 Diesel

VALVOLINE
VR-1 racing oil
rated at over 1200 ppm ZDDP

SHELL
Rotella T 10/30 CJ-4 Diesel 1200 ppm ZDDP
15/40 Diesel CJ-4 1200 ppm  ZDDP
Rotella T 5/40 CJ-4 Diesel (synthetic) 1600 ppm ZDDP

PENNZOIL
Racing oil 25/50 1800/2000ppm ZDDP
Long Life 15/40  1200+ ppm ZDDP

CASTROL
GTX Cj-4 Diesel 15/40 1300 ppm ZDDP

LUCAS
Racing Oil 1280 ppm ZDDP
Long Drain Oil CJ-4 Diesel – high level of ZDDP – OK for vintage engine

RED LINE OIL
Synthetic oil contain 1200 ppm ZDDP
CJ-4 Diesel contains 1200 ppm ZDDP

An oil additive such as Lucas engine break in oil or General Motors E.O.S. contains high levels of ZDDP and will further boost that level, especially during break in.

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