So the consensus would be to run all the AD,CD,JW and all motors with the plain bearings on 16:1 TCW-3 oils? What about synthetic and synthetic blend oils? I know Tubs uses synthetic oil at a little lighter ratio and seems to have good luck. Is synthetic oil a much better lubricant than TCW-3? Even the Merc KE4 calls for 16:1 I believe and they’re supposed to be roller bearing motors I thought. I have a 1975 Evinrude 6HP and now I realize it has plain bearing wrist pin bearings( never really thought about it before) and it too should be run on a heavier oil mix.
