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Old 23-12-2013, 07:19   #16
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Quote:
Originally Posted by MARINE ENGINNER View Post

...so higher viscosity thicker the oil better film between the discs , they changed it because they had slippage problems bettwen the discs ,temperature of the atf oil was rising and the oil film between the discs was not thick enough.you cannot put thicker and thicker and more thicker oil you have to test it because you have built of presure in the saildrive and they tried to find the best oil for stopping the slippage and not bursting the seals

M.E
Yes, I've seen 90W gear box oil routinely put into sail drives (both Yanmars and Volvos)..which I've always assumed was a bad idea due to the viscosity for most models. Right?
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Old 23-12-2013, 07:46   #17
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Re: Volvo Saildrives - Type of Oil?

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Originally Posted by belizesailor View Post
Yes, I've seen 90W gear box oil routinely put into sail drives (both Yanmars and Volvos)..which I've always assumed was a bad idea due to the viscosity for most models. Right?
Our Volvo 120SE specifically calls for synthetic 90W gear oil and the manual specifically says not to use motor oil.

The 120SD calls for 15W40 motor oil. Go figure.

I finally found the reference material (attached). Note that this was published before Volvo changed the 130S recommendation from ATF to motor oil.

Mark
Attached Files
File Type: pdf Saildrive oil recommendation.pdf (259.2 KB, 117 views)
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Old 25-02-2014, 20:22   #18
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Re: Volvo Saildrives - Type of Oil?

I have just spoken with Volvo ( Brisbane Australia) As I'm about to service
my sail Volvo drive 120SE. I have been told to not change to 15/40W and continue with the synthetic gear oil which has always been used. They did say if it was a 120 S then it would take 15/40W engine oil. Hope this helps
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