Quote:

VALVOLINE VR1 SYNTHETIC. Man this stuff is slippery. 10 W 40 for us. I believe I can tell a difference in how the motor revs up when I have this stuff in it. It just seems to respond quicker and feels smoother.




There is at least a 200 RPM difference in idle speed on my engine from mineral to synthetic.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.