Question for the Mercury Optimax owners....do you use only the Mercury Optimax brand oil, synthetic? Is it ok to use the Wal Mart Quick Silver Oil which is a lot cheaper, you can get 2 for the price that you pay for the Mercury Optimax Oil. Thanks Mo
Post by Bob Smith (Porko) on Feb 17, 2016 20:18:59 GMT -1
I use the Quick Silver Premium with TCW-3 and don't have any issues. I heard that if you are going to use synthetic you will need to empty your oil tank and drain the mixing unit on the motor and start clean. Honestly, the Quick Silver is just fine.
Mo, I checked with my buddies up at Team C and O Marine in White Bluff, TN. If your motor is out of warranty the official mercury recommendation is any brand of oil as long as it is rated for DFI, for the Optimax. Motors under warranty they recommend their oil obviously, but if the motor fails the oil is very difficult to determine. Quicksilver Premium plus with TCW3 is "Blended with the highest-quality ashless dispersants, this advanced synthetic-blend formula maintains peak performance under strenuous conditions, such as continuous high speed and heavy loads. This TC-W3 certified oil burns cleaner, maximizes performance, and is strong enough for high-horsepower outboard engines such as Mercury OptiMax and other direct fuel-injected (DFI) engines. Recommended for use in liquid-cooled, 2-cycle engines with oil injection systems or for premix which require a TC-W3 oil. Ships ground only." If you are out of warranty then I would suggest this or an equivalent