New to me 9.9 Merc

Barnacle_Bill

Admiral
Joined
Feb 8, 2004
Messages
6,469
I just bought my first 4 stroke outboard. It is a 2000, 9.9 Merc. What oils do you prefer in both motor and lower unit?
 

Rodbuster

Cadet
Joined
Nov 7, 2011
Messages
15
Re: New to me 9.9 Merc

My new 9.9 says 10w30 four stroke outboard oil.Gear lub says Merc or High Performance gear lub.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,884
Re: New to me 9.9 Merc

I use the Starbrite 10W30 Synthetic blend in my customers 4 stroke outboard and the Sierra 18-9680-2 full synthetic gear lube vs the 18-9650-2 synthetic blend due to the the full is used in the Volvo unit. I subcontract service to a customer that has about 35 Volvo units and about 100 Mercruisers in dry-stack along with about 75 outboards and since I switched the unit over to it I have not had any leaking seals or drive failures in 3 years and some unit are 12+years old......




http://www.starbrite.com/productdet...at=4 stroke Outboard Oils&ProductSSCat=10W 30

http://www.firstchoicemarine.com/p-30971-sierra-synthetic-gear-lube-quart-18-9680-2.aspx
 
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