my dad said he used to use it on his 327, which saw 7,500 rpm regularly. when he tore down the engine to change some things he said the bearings looked like they were brand new. he said he was running SAE 40. heres a link for the spec sheet. http://www.kendallmotoroil.com/techdata/motoroil/K_GT-1.PDF
[ April 20, 2004, 11:13 AM: Message edited by: Harley ]
[ April 20, 2004, 11:13 AM: Message edited by: Harley ]