automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

[nwcove]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

Here is a question that is going to make as much sense as this post! Does the world revolve on it's axis faster where you live than me?

you probably live closer to the equator than i do, so no, the world doesnt revolve faster where i live. (the surface of the earth is moving faster at the equator, than at the poles). and due to that fact alone, i think i will stick with my castrol 80w90, gl-5 gear oil! :facepalm: im still not totally convinced the earth is round......i lived on the prairies years ago, and when my first wife left me......i watched her walk away for three days!!!!

 

[Monte1961]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

That is just the answer I figured I would get!......lol

 

[Mark42]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

..... They say that the marine oils do not allow that water and oil to mix, but at the same time, when I've had leaky lower-ends in the past, my GL-5 automotive 80/90 didn't allow it to mix either! Water would always drain first when I cracked the screw; it was never mixed in........

The marine oils I read about specifically state that they keep the water in suspension, rather than puddle. The reason being is collected water has no real lube property and will cause scoring. The same water kept in suspension in the oil is so dilute that it can not do as any/much damage as puddled water or water globs.

 

[DECK SWABBER 58]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

The manufacturer's say their is a difference but as F_R pointed out, how do we really know it's true? The postings here point to there not being enough justification to warrant the difference in price.

I for one have fallen for the hype. I'm starting to rethink that. :facepalm:

 

[Davem3]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

you can save like 2 bucks now and pay hundreds for a new lower end later..................me i think i will spend the extra bucks myself

 

[Davem3]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

Long before the internet and all this information about emulsifiers in gear oil... I used to run 80W90 auto gear lube in my old Johnson 25hp. I never had a problem. These days I've switched over to marine lube.

However, I do occasionally top off the axles in our old Jeep with marine 80W90 these days. I've heard it's good if you ever need to drive across a river (like that will ever happen).

cough cough ,Springfield tornado .............

 

[Mark42]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

The manufacturer's say their is a difference but as F_R pointed out, how do we really know it's true? The postings here point to there not being enough justification to warrant the difference in price.

I for one have fallen for the hype. I'm starting to rethink that. :facepalm:

Simple. You get on the net and find articles by outfits that actually test the products and report their findings. Like the one I linked to earlier, but apparently no one read.

Read this:

http://bwbmag.com/output.cfm?id=1891729&sectionid=308

Or don't, and just keep asking people "how do we really know its true?" Your choice.

 

[DECK SWABBER 58]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

Simple. You get on the net and find articles by outfits that actually test the products and report their findings. Like the one I linked to earlier, but apparently no one read.

Read this:

http://bwbmag.com/output.cfm?id=1891729&sectionid=308

Or don't, and just keep asking people "how do we really know its true?" Your choice.

Sorry Mark, I totally missed your link. I always enjoy your informative and well thought out posts. I'm no longer a rookie here and I should know better then to follow along with the "hype" that so often poison's these type's of threads. :facepalm:

 

[tx1961whaler]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

Did the Mobil one non-marine oil beat out some of the marine oils in that test? It looks like that was the only non-marine oil in there.

 

[Sixmark]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

The difference between the two where I am is about 70 cents, come on guys, really about $1.40 difference per season.......you are going to spend more than that burning gas while waiting for the wife to get out of the gas station restroom on the way to the lake.

 

[jimmacl]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

I can't respond on gear oil but I can talk about marine grease. I have several 1940s gale 3 and 5 hp. I have used both marine grease and bearing grease in the gear case.

The marine grease blends with the water and creates sort of a lub pudding that feels very slippery.

The bearing grease mixes a bit but tends to stay separated. The wetted grease just didn't feel as slippery wet as when dry.

This was with only one brand of each grease (two different manufacturers) could be different with different companies.

jim

 

[Mark42]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

Jim, thats interesting info you posted about the marine grease vs bearing grease. I use marine grease in my trailer wheel bearings because one seal fails after just a few trips and water always gets in . I found the same thing you did... the marine grease "absorbs" the water, rather than letting it form into little water pockets in the grease.

Regarding the oil test (btw, for some reason those graphs will not open for me), the Falex Pin and V-Block test is pretty impressive. Evinrude in top 3. The closing statement pretty much says it all for me. I'll be using the Evinrude oil.

After closely studying the data, we noticed one lube consistently tested well, and ranked above average in most of the tests. It also demonstrated good lubricating properties in the water dilution tests. That oil is the Evinrude HPF-XR, highly recommended for the boater who wants it all ? good anti-wear characteristics, and no worries about a little water intrusion.

 

[stackz]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

Mark, I hate to admit it but I run automotive gear oil in all of my motors. I hate to admit it because I spend all these hours on iboats fixing other peoples stuff, and all 4 of my gearcases leak and I'm too lazy to fix them. I don't go out that much anymore, and I just change the oil when I get in. I see no difference in the separation or color of the auto gear oil or the marine oil that I have used. But I will say that I don't let it set for too long.

this. my neighbor runs auto 80w in his foot as well. same thing, no frothing or milky difference between the marine or the automotive when he drains his foot. he's been running auto 80w for the past 3 summers and usually is out every weekend running 3 miles offshore. his dog gears still look fine.

as long as the oil meets the same standards just use it. oh yeah, and just to toss wood on the fire, he uses the walmart supertech brand 80w in his foot *gasp*

 

[cdn-pk]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

i just want to point out that how we drain the lube does not give us a clear picture of how it sits in the gear case. for example the size & distribution of any pockets of water and perhaps where they tend to naturally sit in the gearcase cannot be seen. Experience however is the best teacher is this matter.

i'm not going to chime in here but, i know the price difference here on the prairies between cheap brand auto 80x90 and marine 90 is $1/liter and the difference between the "premium" or name brands is $1.50/liter.

considering all the money put into the rig (trailer included) this is just a non-topic for me. i stock up on the marine grade stuff on double coupon day and it lasts for seasons!

Some good info though on the comparison tests thanks guys

 

[tx1961whaler]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

this. my neighbor runs auto 80w in his foot as well. same thing, no frothing or milky difference between the marine or the automotive when he drains his foot. he's been running auto 80w for the past 3 summers and usually is out every weekend running 3 miles offshore. his dog gears still look fine.as long as the oil meets the same standards just use it. oh yeah, and just to toss wood on the fire, he uses the walmart supertech brand 80w in his foot *gasp*

I's just like to clarify that I don't suggest that anyone run non-marine oil under normal circumstances. I happen to be changing gear oil after every trip since I know they have a minor leak. The problem with any outboard gearcase is that normally one will not know if there is a leak until it is possibly too late. If a marine gear oil can help prevent this from happening, then it is well worth it.

 

[clemsonfor]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

I saw a test somewhere i think i boats linked to it maybe, but it did test marine oils and non marine in the test and i beleive supertech was listed and it performed better than some marine oils did.

 

[clemsonfor]

Re: automotive 80w90 gear oil vs marine 80w90 gear oil. is it only $$$$

Simple. You get on the net and find articles by outfits that actually test the products and report their findings. Like the one I linked to earlier, but apparently no one read.

Read this:

http://bwbmag.com/output.cfm?id=1891729&sectionid=308

Or don't, and just keep asking people "how do we really know its true?" Your choice.

OK i swear this is the article i saw and was referring to, i think i was able once to see those graphs and i swear supertech is in there and not at the bottom!

I even zoomed the page just a bit ago and the graphs are fuzzy and not in focus?