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Old 01-12-2012, 15:37   #1
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Transmission Oil?

I just bought two new yanmar 4JH5E Diesel engines with KM35P transmissions.
The specification calls for SAE 30 for the Transmission.
Why not ATF?
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Old 01-12-2012, 15:47   #2
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Re: Transmission oil????

I dont know why, but yes some, like yanmars, do use the motor oil. They mst be designed to run a lot cooler....
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Old 01-12-2012, 15:53   #3
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Re: Transmission oil????

Quote:
Originally Posted by KatKokomo View Post
I just bought two new yanmar 4JH5E Diesel engines with KM35P transmissions.
The specification calls for SAE 30 for the Transmission.
Why not ATF?
B/c it's cone-clutches and gears! A heavy weight oil is better for this system.
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Old 01-12-2012, 16:04   #4
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Re: Transmission Oil?

Kanzakee transmissions for the Yanmars call for 30w motor oil and I have over 6,000 hours on mine. Do it as recommended.
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Old 02-12-2012, 06:39   #5
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Re: Transmission Oil?

Quote:
Originally Posted by KatKokomo View Post
I just bought two new yanmar 4JH5E Diesel engines with KM35P transmissions.
The specification calls for SAE 30 for the Transmission.
Why not ATF?

Our ZF gears also call for 30-weight. That's quite common.

-Chris
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