Castrol Edge
The Castrol Edge 5W-30 is a full synthetic and does meet the GM 4718m specification.
Last edited by Darkman; Oct 8, 2010 at 08:32 AM. Reason: Spelling
gm here use a normal weight oil in the lsx engines and mobil 1 in the hsv's, which are just a tuned up version of the lsx, same internals just exhaust mods and minor tune difference between the engines.
heres a web link: http://www.castroledge.com.au/


