Royal Purple: B.S or not?

[CJ_Boxster]

Could be, I wonder if there is anyone here that can confirm with there boxster weather not the tapping noise went away after switching from 10w40 to 0w40.

Originally Posted by CJ_Boxster

Could be, I wonder if there is anyone here that can confirm with there boxster weather not the tapping noise went away after switching from 10w40 to 0w40.

Could even be something as simple as better gas mileage. 1 or 2 extra MGP's. I don't think a 10W40 oil is considered an "Energy Conserving" viscosity. I know for sure an oil like 20W50 is NOT. I might be wrong about the 10W40.

[blue2000s]

Originally Posted by CJ_Boxster

Could be, I wonder if there is anyone here that can confirm with there boxster weather not the tapping noise went away after switching from 10w40 to 0w40.

0w-40 and 10w-40 are the same viscosity when warm.

Originally Posted by blue2000s

0w-40 and 10w-40 are the same viscosity when warm.

But the noise happens when the oil is cold...at start-up.

[blue2000s]

Originally Posted by bmussatti

But the noise happens when the oil is cold...at start-up.

I believe Porsche qualifies lifter tapping as "normal" on a cold engine. In which case, tapping when warm is when you should be concerned.