SP is just formulated for LSPI protection and the TGDI chain wear test so it's arguably better than SN which is the whole point behind API.Using google AI brought me to this post. I was making AI search through bitog and other forums, as well as manufacturers pds, to list and compare the data specs and used oil analysis of as many oils as i could think of. Engine is 3.0T(sc). So VW502, 5w40 and 0w40, API SP and SN
Some stats are missing, but Motomaster shares exact same figures in many areas as shell helix and Pennzoil Platinum Euro, both grades. The pour points and flash points in particular are very very good compared to others. Two data specs that shell oils lag in, are htst and cst/100c, from what i can gather so far.
I know you used, and had great results from Castrol 0w40, but it's new SP formula seems not as rich in group IV as before. How do you think these shell 0w40s, or 5w40's, fare in higher horsepower engines? Also, what do you think about API SP vs SN. Most oils on the shelf are SP now, all lower viscosity, but also lower pour points, which hint of higher pao content....is the higher calcium of old SN better in any way than the new SP formulas? What would you recommend for this engine? Thanks.
Lower pour point doesn't mean PAO. It just as likely could be GTL