Lower drive unit oil (non-Volvo)

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jhnmdahl
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Lower drive unit oil (non-Volvo)

Post by jhnmdahl » Tue Jan 20, 2015 9:10 pm

The service manual for my 5.7L penta says to refill with fresh GL-5 synthetic gear lubricant or mobilube 1 shc 75w-90 (meeting or exceeding MIL-L-2105C or D, API GL-4 or GL-5). While Mobil 1 75w-90 meets GL5, the Mobilube was a similar full synthetic with no limited slip additive - now replaced by Mobil Delvac Synthetic 75w-90.

Looks like I'll use the Mobil Delvac Synthetic 75w-90 for the first lower unit change.
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Big Block Power
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Re: Lower drive unit oil (non-Volvo)

Post by Big Block Power » Wed May 18, 2016 8:30 pm

Have you had the boat out with this oil yet. Mine won't need changing till the end of the year but that's prob the lube I would switch too ofc I don't go Volvo. It Doesnt sound like the drive is too fussy on this lube.
2003 Cobalt 220 8.1gxi
Neenah Wi

jhnmdahl
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Re: Lower drive unit oil (non-Volvo)

Post by jhnmdahl » Thu May 19, 2016 11:43 am

Yep, I can't say I notice any difference though. Mobil oils have a pretty impeccable reputation, and I like being able to use parts and materials that I can find most anywhere.
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Big Block Power
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Re: Lower drive unit oil (non-Volvo)

Post by Big Block Power » Thu May 19, 2016 9:08 pm

That's what I wanted to know. Can't go wrong with any Mobil product for sure.
2003 Cobalt 220 8.1gxi
Neenah Wi

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