I am using Motorcraft 15w40 dino with ARX for the clean phase and wondered if it would be possible to use Delo 5w40 synthetic for the rinse phase. I believe it is a Group III synthetic and I have a gallon around that needs to be used. Would it hurt to use it for the rinse phase? I have regular SuperTech 15w40 dino to use if you think it would be better. Thank you.
-- Edited by coffee at 02:06, 2008-07-04
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