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darrin darrin is online now
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Join Date: Oct 2008
Location: Denver, CO
Posts: 3,507
Quote:
Originally Posted by dan88911 View Post
I have been running Swepco 306 20/50 in my 88.
And I see our host is offering an oil change kit featuring Liqui Moly Classic 20/50
Is Moly synthetic? Following the drain will the mixing of it with the slight amount of Swepco still in the system be a problem?
Thanks in advance
Dan:

To directly answer your questions

1) per https://products.liqui-moly.com/classic-motoroil-sae-20w-50-hd-4.html, Liquidations Moly Classic 20/50 is a "Mildly blended mineral-based motor oil," so no, it is not synthetic.

2) while I would recommend that you either stick with the swepco 306 you're currently using or go with one of the synthetic options referenced above, to answer your second question, no -- having a bit of your old oil mix with this new oil (even if one was synthetic and the other was mineral) would not be a problem. I did something similar when I switched from fully syntetic mobile 1 to partial synthetic Brad Penn a few years ago without issue/problem.
Old 02-09-2021, 11:37 AM
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