cceguy NTO Supporter Supporting Member Joined Sep 21, 2020 Messages 107 Reaction score 32 Location Indianapolis, IN Mar 15, 2023 #1 My Mercury motor calls for 80w90 gear lube for the lower unit. I have some sae 90 gear lube left over from another motor. Anyone have thoughts about mixing the 2 oils? Thanks.
My Mercury motor calls for 80w90 gear lube for the lower unit. I have some sae 90 gear lube left over from another motor. Anyone have thoughts about mixing the 2 oils? Thanks.