The Ford Barn - View Single Post - Mixing Synthetic with Conventional Motor Oil

WHN · 02-19-2018, 07:52 PM

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Our Volvo XC70 uses a blend of synthetic and regular oil.

I wouldn’t be concerned about mixing the two oils. I would be concerned about the possible effect on seals and gaskets if you have an elderly engine.

02-19-2018, 07:52 PM	#6
WHN Senior Member Join Date: Mar 2017 Location: Connecticut Shoreline Posts: 1,824	Re: Mixing Synthetic with Conventional Motor Oil Sponsored Links (Register now to hide all advertisements) Our Volvo XC70 uses a blend of synthetic and regular oil. I wouldn’t be concerned about mixing the two oils. I would be concerned about the possible effect on seals and gaskets if you have an elderly engine.