Originally Posted By: Atesz792
I've read somewhere that they used to recommend 5w40 but after a few engine failures (maybe the aforementioned issues) they switched to 10w60.
Meguin / Megol makes a 10w60 JASO MA oil which supposedly is 100% PAO based (if one can believe their e-mail). It's not too expensive either.
I think that might be a confused quote from when the hydraulic tappet Californias came out in 2003. They used to spec 10-50/60 but had failures of the rollers to changed it to 5w-40 and released a recall kit with new rollers.
Mines running good at 60k
As for the oil heat, no idea, but you sure can smell mine after traffic on a hot day