rollbar The petroleum Qualilty Institute of America, an independant oil quality test site. Check to see if the oil you use is really what they say it is.
tufcj With current API standards being SM/CJ, I'd be reluctant to pick up an off-brand that was only SC/CC, but I watch things like that. For someone who makes their decision based solely on price. They could be getting a worse deal than they bargain for. Bob tufcj
