Gear Oil

tborcher

Active member
Joined
Oct 21, 2016
Messages
40
Fluid Motion Model
C-24 C SE
Hull Identification Number
FMLT2106G617
Vessel Name
Miss Baker
MMSI Number
338227087
Do I use diesel oil or regular motor oil in the marine gear (as opposed to the engine, itself) in my Yanmar 3YM30AE?
Tom
 
On my R-27 I use straight regular 30 weight oil. I would check your manual to make sure you use the correct fluid.
 
I have a 2008 R-21ec with the 3YM30 yanmar engine and transmission. After much confusion from manuals and discussion with a local oil and distributor was told to use sae30 non-detergent oil in the gear box by a long time yanmar parts dealer.

I have changed the gear oil twice during regular maintenance and have not had any issues with this practice.
 
tborcher":2ctdukzq said:
Do I use diesel oil or regular motor oil in the marine gear (as opposed to the engine, itself) in my Yanmar 3YM30AE?
Tom

Hello Tom

My 3YM30 with Kanzaki transmission calls for straight weight SAE 30. Definitely check your owners manual.


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