Originally Posted By: sprintman
Multiple UOA's here show RP shears not matter which grade.
No they don't. I haven't seen a 5w20, 10w30, 0w40, SAE 30, SAE 40, SAE 50, 10w40, 15w40, 5w40, or 20w50 UOA showing them sheared w/out severe fuel dilution. This doesn't even go into their XPR, SPR or Nitro racing oils.
As a side, you can find UOAs on this board of just about every oil that has sheared.