Oil question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

76bonanza · 12-29-2004, 10:14 PM

The previous owner ran 20w50 castrol synthblend so I ran it at my last change, but this change I would like to run 10w40 same castrol synthblend.

I dont mind the brand just 20w50 seems so thick.

My question is do you think it might leak worse going to a lighter blend? It leaks a very small amount now not even enuf to drip on the ground I never have to add oil at all between changes which is about 4-5 months 1500-2000 miles I only drive it about 15 miles a day to work.

Thanks for any thoughts.

12-29-2004, 10:14 PM	#1
76bonanza Senior Member Join Date: Mar 2003 Location: St robert Mo Posts: 2,001	Oil question The previous owner ran 20w50 castrol synthblend so I ran it at my last change, but this change I would like to run 10w40 same castrol synthblend. I dont mind the brand just 20w50 seems so thick. My question is do you think it might leak worse going to a lighter blend? It leaks a very small amount now not even enuf to drip on the ground I never have to add oil at all between changes which is about 4-5 months 1500-2000 miles I only drive it about 15 miles a day to work. Thanks for any thoughts. __________________ 1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO



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