Well I just looked at the Mfg specs:

http://www.valvoline.com/pages/products/product_detail.asp?Product=10

They seem to indicate it is good for everything although they don't come right out and say that. But they say it is good for all metals and they have some test data. And the specs say it is yellow, so I imagine that means bright yellow, not the usual MB pale straw yellow.

Mike

__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra