Rear end gear oil question

[Midrsv]

I was in the parts store today checking out the gear oils and I noticed that none of them had the GL4 spec that the Venture service manual calls for. All were GL5. Does anyone know if the ratings are backward compatible? Can GL5 be used for a GL4 application?

 

what oil do you recommend?

 

Dennis

[flb_78]

I use Mobil 75w90 synthetic. Get it at most auto parts houses. I "borrow" mine from work.

[heatonmt]

It is not borrowing unless you return it when you are through with it. HA HA

 

 

:7_6_3[1]::7_6_3[1]:

[Pilot]

I was in the parts store today checking out the gear oils and I noticed that none of them had the GL4 spec that the Venture service manual calls for. All were GL5. Does anyone know if the ratings are backward compatible? Can GL5 be used for a GL4 application?

 

what oil do you recommend?

 

Dennis

 

Yes usually if the spec is equal to or greater then your OK. I.E. GL5 is higher then GL4, GL6 is higher then GL4 or GL5. I might be wrong on this I'm just going by what I have read, I'm not an expert on oil.

[pick]

I use Lucas 80/90 gear oil.?

[KeithR]

My local dealer sold me Yamalube Gear Oil SAE90 AGMA 4 EP said thats what they use in all the bikes they service ?

 

 

Keith

[V7Goose]

It's in the manual somewhere, but not easy to find - I think maybe in the specs in the back? Anyway, I found it after I went all over the place to find GL4 (which I did find eventually). Had a lot of GL5 on the shelf, but didn't want to use it while I thought Yamahaha only said GL4. IF I remember correctly, GL5 is not compatible with certain gear boxes that have bronze bushings in them, or something like that. Not a problem for us.

Goose

[Midrsv]

I just picked up a quart of Mobil 1 75w90 synthetic, GL5. Hope it works.

 

Dennis

[Freebird]

It will be fine. That's what I've used in mine for several years.

[hig4s]

I use Lucas 80/90 gear oil.?

 

You might want to read this study!

http://www.amsoil.com/lit/g2457.pdf

 

I use Mobil 1 or Castrol Syntec

[dray]

http://www.amsoil.com/storefront/fgr.aspx

 

this is what i use and its great

read the Applications you'll want to see the last sentence of it refers to the GL 4:thumbsup2:

[hig4s]

http://www.amsoil.com/storefront/fgr.aspx

 

this is what i use and its great

read the Applications you'll want to see the last sentence of it refers to the GL 4:thumbsup2:

 

That site has a pretty good price too. I've never seen a test on the Amsoil "long life" but I would guess because of the name and higher price, the Amsoil "Severe Gear" would be a little better.

 

Severe Gear was the top rated gear oil in the test results link I listed above.. Mobil 1 was the next best rated, and of the 12 synthetic and 2 dino oils, Lucas synthetic was rated last.

[Guest mmmouse]

It's gear oil....not Rocket Fuel. I use the same lube I use in my outboard lower unit...I have pleanty of that laying around.

[Rick Butler]

It's all just gear oil,

 

Yeah Right