Re: The real deal on Oil??
More myth here. Engine manufacturers cannot force you to use their oil using denial of warranty as the threat. Car makers can't do it, truck makers can't do it, motorcycle makers can't do it, and neither can marine engine makers. If a special oil is required, the manufacturer must provide it. Read your manual and the oil statement will very likely read "xxxxx oil is recommended". There is a very big difference between the words "recommended" and "required". In the marine industry for example, if TCW3 oil is required, then TCW3 certified oil from any supplier is ok to use and the engine manufacturer cannot deny warranty if you used Wal Mart's TCW3 instead of Mercury's TCW3.