I know I should use OMC premium blend lower unit oil in my '73 OMC I/O, but the dealers around here are carying Evinrude/Johnson HPF XR lower unit oil.
Can thise be used?
Thanks
I just recently purchased a boat with 1973 OMC 140hp sterndrive and do not know about I/O. Doing some routine maintanance of changing plugs, oil and filters. I have a few questions. I would greatly appreciate if someone could please answer.
1) How do you change the oil in the intermediate...
