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  Lower Unit Lube - Any Diffrence btwn std. gear oil?

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Author Topic:   Lower Unit Lube - Any Diffrence btwn std. gear oil?
JDH posted 06-25-2002 05:46 PM ET (US)   Profile for JDH   Send Email to JDH  
Hi -

Since I need to do the 2 x year lower unit drain & fill, I went to the store to buy the gear lube. In looking a t quarts for $4 and noticing that it met a host of MIL psecs as well as GL-5 it occurred to me:

Is it any different than standard SAE 90 weight, GL-5 gear lube that I usually buy in 20 lb pails (5 gallon) for $20??? I keep a pail around all the time for my 4x4 exploits, already own at least 2 pumps, and would decidedly HATE to pay 400% markup because it is 'marine'.

Anyone know if there is a real difference?

acseatsri posted 06-25-2002 06:14 PM ET (US)     Profile for acseatsri  Send Email to acseatsri     
Is it worth $4 to have peace of mind that it's the RECOMMENDED oil? I know in Mercruiser stern drives Mercury oil is recommended, and a mechanic who resealed one on an old boat of mine wouldn't put anything else in there.

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