temporary gear lube mercruiser 140

[Alumarine]

Hi there. I have a 74 Mercruiser 140 I/O and I normally use Quicksilver Gear Lube Premium Blend (High Performance)in the lower end.<br /><br />I'm going to be working on the lower end this Spring and was wondering if it was ok to use a GL5 75W-40 in it for about an hour so I can get it out of the water.<br /><br />I'd rather not put $40.00 worth of gear lube in it just to drain it out right away.<br /><br />thanks for any help

 

[trog100]

Re: temporary gear lube mercruiser 140

i think the quick silver stuff is a straight 30 grade for what its worth.. putting something else in for an hour wont do any harm..<br /><br />trog100

 

[rodbolt]

Re: temporary gear lube mercruiser 140

with a GL5 rating it should work out ok. never saw a 75w-40 have seen 75w-90.

 

[Alumarine]

Re: temporary gear lube mercruiser 140

Oops, meant 75W-90.

 

[LubeDude]

Re: temporary gear lube mercruiser 140

Sure, no problem, but I wouldnt run it real hard for a long period of time, it may foam a bit too much.

 

[Alumarine]

Re: temporary gear lube mercruiser 140

Thanks for the info.

 

[Don S]

Re: temporary gear lube mercruiser 140

One question Marc. WHY?? <br />If you put in the right stuff, it's going to be good for 100 hours. Why do you want to put in a different kind of oil for only an hour and then change it again? I don't understand?

 

[Alumarine]

Re: temporary gear lube mercruiser 140

Don S. Good question.<br /><br />It's possible that the oil was drained last fall and not refilled (don't ask). The boat is now on our boat ramp at our cottage.<br /><br />I'm going to be pulling the boat out and doing an overhaul and draining the gear oil. I need to drive the boat to the public boat ramp. I will be using the correct gear oil when I put it back together.<br /><br />I want to make sure I have everything I need to get it going temporarily.

 

[Don S]

Re: temporary gear lube mercruiser 140

Thanks, I was afraid your question was answered, but that you may have had a problem with the drive and just wasn't asking the right question.<br />Good luck with your overhaul.

 

[Buttanic]

Re: temporary gear lube mercruiser 140

For what its worth I used regular automotive gear oil in my Merc I/O's for years in salt water and never had a problem. Only Merc oil it ever had was when it came from the factory.

 

[Capt Ken]

Re: temporary gear lube mercruiser 140

Regular gear oil will work just fine as long as you don't get water in the drive. Then you would have had a vanalla pudding that is near impossible to get out of the drive thru that little hole. Marine gear oil will absorb I believe up to 50% water and still keep it lubercating properties.

 

[Buttanic]

Re: temporary gear lube mercruiser 140

You can buy a gallon of automotive gear lube and change it four times a year for less than half the price of one change with Merc lube. I would rather change it four time a year rather than once. Plus if a leak does develop you will find it a lot sooner.

 

[lakelivin]

Re: temporary gear lube mercruiser 140

wal mart has a 80-90w marine gear oil for like $3 per quart. they have full synthetic castrol 75-90 marine gear oil for around $7 per quart. how much does your boat take? why not spend $6 bucks for Marine oil for the tempoary use?

 

[Alumarine]

Re: temporary gear lube mercruiser 140

Thanks for the help. I used 1.3 litres of 90W Marine oil at $4.00 a litre. I'm going to switch back to the Mercruiser stuff when I'm finished working on it.