Thanks for posting. Very consistent results. I was glad to see Motomaster Formula 1 did well. (It’s the house oil for Canadian Tire). I recall Royal Purple doing worse than Mobil 1 at the colder temps as well. Anyway, looks like the film director has enough oil for a few years!
Originally Posted By: FermeLaPorte
New to me test. What the frick with Royal Purple. You would think it would be better
Wouldn't it be funny if it was actually the purple dye that made it thicker at cold temps??
;^)
These test results are getting old now, but RP 5W30 had one of the highest CCS (-30C) viscosities in the PQIA's testing of 5W30 synths in 2013...almost 40% higher than M1, QSUD, and the two Pennzoils they looked at. RP still met the CCS requirement for the grade quite handily, though.
Of the oils that were tested in the video that I am familiar with, Amsoil SS 5W30 has the lowest CCS viscosity at -30C. Not surprised that the Castrol varieties were a tad slower than most of the others as their 5W30s that I have been able to find info for seemed to have CCS viscosities up closer to the spec limit like RP.
I'm sure any of these would probably do me just fine, but I like the idea of lower CCS viscosities as a skier who parks overnight on some cold nights in the White Mountains and gets going when it is still dark and cold out...I will give M1 0W30 AFE a try this winter assuming I can actually find a jug with the d1G2 logo on it by then.
I have always had the notion that Castrol makes great oils but they aren't the best cold weather oils....this test does nothing to change that notion. I was surprised that the Pennzoil products did just as well as the Mobil 1's (maybe even slightly better)....
Originally Posted By: FermeLaPorte
New to me test. What the frick with Royal Purple. You would think it would be better
Why would we think Royal Purple would be better? Marketing ? The color?