guys i as most of you work on the older motors and i am working on a 60’s era johnson 6hp, and have read serveral clips on lower unit lubes,,, i have been using hy vis by omc and finding it hard to come by ,,,,,a dealer told me hypro will work just fine,,, it syn. and not sure what to expect . and some have said merc 80w90 will be just great,,, so please express what your thoughts are and if had any experience with these and i’ll stand by ,,,,thank you and happy wrenching,,,
Any 80W-90 rated for marine use will replace the Hi-Vis just fine. Marine gear oils have special additives in them to protect against water intrusion and contain anti foaming agents as well. Automotive gear oils will work in a pinch but they don’t have the extra protection marine gear oils supply.
This reply was modified 3 years, 2 months ago by Mumbles.
GARY STEFFENEY US Member - 1 Year (includes $3 online payment fee) Replies: 37 Topics: 15