Fluid for lower unit... What to use...

[kdmiller8251]

Looking for information on the gear lube for the lower unit.... Is that stuff Just regular 80-90 or is there something special to it where a person has to use the marine lubricant on it???<br /><br />1990 alpha one.<br /><br />Thanks<br /><br />Tallman

 

[kdmiller8251]

Re: Fluid for lower unit... What to use...

Still looking for info can anyone help??

 

[Boatist]

Re: Fluid for lower unit... What to use...

The 75w-90 stuff probably is ok but for me and I only change it one time a year I use top quality sentecic oil from manufacture. It will accept 10 percent water with out damage and for another five bucks is it worth taking a chance. Does the auto stuff mix with the water or let saltwater go to bottom and oil float on top where you bearings are running in salt water???

 

[sea wolf]

Re: Fluid for lower unit... What to use...

don't use reg. 80-90. it doesn't have anti foaming agents like marine grade.

 

[Walter]

Re: Fluid for lower unit... What to use...

I suggest you purchase the proper gear lube sold by Mercury. Their "premium" gear lube is what you're looking for. I know folks use many different brands and types of gear lube, and some may be fine, however, the viscosity of marine gear lube is much thinner than automotive type. I also suggest you buy the hand pump (looks like a hand lotion dispenser with a hose attached) used to add the gear lube.<br /><br />G.I.Joes, my local sporting goods chain, sells Mercury oil & gear lube for less than the dealer. They also sell the pump... I'd suspect you too can get it from a sporting goods retailer.<br /><br />Walt

 

[kdmiller8251]

Re: Fluid for lower unit... What to use...

Thanks guys will do!<br /><br />Tallman