Interesting Oil Article

I still use conventional Walmart oil in the blue jugs.
From 1967 to 1971 SAE certification for motor oil for spark ignited engines was SD. Since then they have gone through SE, SF, SG, SH, SJ, SL, SM and today new oil is SN. I figure SN oil is more than good enough for my engines that were designed to use SD.
SAE upgrades as tolerances get tighter, temps increase, smaller engines are expected to do more, more turbos are used, ethanol is introduced and service life increases. Oil that is certified higher is backward compatible for older engines. Good enough for my old machines.


Edited by 6768rogues - Oct/21/2014 at 12:39pm

Ive heard many places that thw Blue bottle oils at Wally World are Valvoline . I use alot of Shell Rotella non Synth 15/40 in alot of applications. Its pretty good Dynosour juice in my book

dbomb wrote: Ive heard many places that thw Blue bottle oils at Wally World are Valvoline . I use alot of Shell Rotella non Synth 15/40 in alot of applications. Its pretty good Dynosour juice in my book

I wouldn't doubt that. I don't think Walmart owns a refinery yet, and with their volume I would expect that their supplier is one of the larger players in the market.

tsanchez wrote: Most you can take with a grain of salt, its been argued over on speedtalk for a few yrs he always pitches it.

I still remember the STP commercial from the '70s:  "STP is the racer's edge."