Steve Nugent

Anyone heard of this stuff? Two friends with new M3's (yeah, I know, I'm hanging out with the wrong crowd) say this is a newly available formulation strongly recommended for their cars. Might this be an an improvement on the Mobil 1 15W-50 that I'm now using?

Robert Linton

In a nutshell, Castol RS Synthetic 10W60 is the best commercially available oil you can buy.

Arjan B.

Yes, you're right,

We used in racing Castrol 10W60 oil, 10 for cold starts, and 60 for very hot engine temp.[so, max. profit for street cars also]

But, you can't buy this on every corner of the street, you have to search for that.

Have a nice weekend,

Arjan
964 C2 1992 Black.

Flying Finn

I'm using that stuff on my 911 (1975), should be good. My 993 gets Mobil 1 though.

Max68100

Hum ! 10-60...it depends where you live. I prefer Shell 0-40, fine for cold starts and 40 is thick enough for normal use.