Valvoline synth 20-50. I like holding 50+psi on the oil pressure gauge all the time. Especially after an hour on the freeway and then pull into a gas station. 4500RPM tends to heat the oil up and I was running around 15-20PSI with 10-30.
Ususally Napa filters since nobody around has anything but that or Fram.
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-72 C-10 short step (straight line only)
12.922/102.28
-69 C-20 on Propane (DD)
-69 C-10
-56 Mack B-753LS (tow rig)
-94 Chev K2500 Short Ex-Cab
-89 Isuzu Trooper...Kinda
-03 Kawasaki KFX-400
-05 Suzuki DRZ-400S
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