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Re: 5-30/10-30 whats the diff?
Posted to Open Discussion Forum on 2/22/2000

Hi Mark,

Many manufacturers now have a 5W-30 weight specified on the oil filler cap. From what I have found out, the purpose is basically an efficiency thing. The oil will flow to the needed parts sooner on start up, thus reducing friction sooner, hence a mo... Login to read more.