i went to the penrite building, i was never a fan of penrite , castrol for 8 years strong, but gtx2 wont be able to do the job in a 100kw so ill prob use SIN or something with like a 15-50 15-70 ,motul has a low sheer rate and needs constant changing, good for heat but lastability is next to non , maybe the new castrol is looking good but penrite still looks like it's number for wide protection range
