SicShelby09
Banned
You guys are assuming that a 50 grade lubricant is required because there are no piston squirters, assuming that a 50 grade is too viscous to pump through a squirter.
The truth is, the lack of squirters means the piston is going to be much hotter without a constant flow of oil cooling it down. Hotter oil around the piston means a lubricant with a higher high temp/high shear HT/HS is required. This is the viscosity of a lubricant at 300*F (150*C)
20 grade lubricants are in the 2.8 range (too light for road racing heat)
50 grade lubricants are in the 4.5-5.0 range - good for road racing (robust true synthetic 40 grades are as well)
That doesnt quite make sense seing as that people are saying the 13 GT500 does have the squirters. With that said, why does it still need the higher viscosity oil? Without the squirters, then by your theory it should need them no?