Lower Unit Oil

[1fastmerc]

Originally Posted by inchspinner

Fixing to change my lower unit oil on my 03 merc 2stroke 75...What does everyone recommend as far as grade and brand...I dont need a comparison of who is right and who is wrong..I want someone that does their own maintenace...and best place to buy it around Lake Charles...tia...chris.

I was told to use Mercury oil in your lower unit. I was using an synthetic and was told that an representative from one of the oil companies, Klotz I think, said that when the synthetic mixes with water it becomes corrosive. If anybody disagrees I'm just repeating what I was told.