You can click here:

www.GadgetOnline.com/AMSOIL.htm

and then click the link to online ordering.

I use the Series 2000 75w90 in all my gear boxes including the manual tranny. It is GL-5 and also certified to meet the MT-1 standard for MANUAL transmissions so it is safe to use in your manual. Lubes certified MT-1 must have a low reactivity to the different metals and materials used in manual transmissions. All AMSOIL gear oils also have the needed friction modifiers for limitied slip differentials.

You can drive yourself nuts hunting all over the damn place to get what you need or you can do it the easy way like me and buy ONE product that is perfect for all your needs.

Gadget

 

well the issue is that i cant find gl4 and i dont know how its differnt from gl5, so before i just dump in gl5 i want to know why im doing it......

 

Well, you can continue to over think this whole thing or use AMSOIL gear lube that will meet all of your needs and then some. See if you can find some other gear lube out there that is rated MT-1.

Here is what the Series 2000 75w90 gear lube covers:

AMSOIL Series 2000 Synthetic Gear Lube is Recommended for Applications Requiring the Following Specifications:

API MT-1, GL-2 THROUGH GL-5

MIL-PRF-2105E

MACK GO-J, GO-J PLUS

CHRYSLER MS-9070

GM 12346190

FORD M2C-201-A

ROCKWELL 0-76-E

EATON PS-037A, PS-109



Gadget

 

I described it to you once before up above. You can also read about the differences to your hearts content with a web search on GL4 vs GL5.

 

Mobile 1 dude

 

Red Line MT (75W-90 GL4 made especially for manual trannys) for the 5sp and Mobil 1 75W-90 everywhere else. The 5sp needs GL4. GL5 can be too slippery and cause gear clash in the 5sp. Something to do with the synchros needing a slightly higher friction coefficient to work smoothly. Honestly, it's true. I've tried Mobil 1 75W-90 in 2 different 5sp's and both develped some gear clashing in 1-2 and 2-3 shifts. Once I read up on the difference between GL4 and GL5 it made sense. I switched to Red Line MT and the problem went away. Much smoother shifts.

A good source for Red Line is: www.myoilshop.com They have about the lowest prices and cheapest shipping around for Red Line products. Put in dealer code 675421 and get another 10% off

Toyo Master

 

I have a friend who used the GM sychromesh and he now swears by it . He uses it in his truck and Mr2. I plan on adding it to my 4runner

 

If you have a 2004 5 speed automatic you must use only Toyota ATF WS (WS-Stands for World Standard). If you use anything else with this fluid your transmission will fail, per Toyota. Ok now does anyone know what this stuff is? Toyota says it is a life time fill and only needs the filter and oil in the pan changed (at 60K miles) if you tow with your vehicle.

 

The owners manual for my automatic, says 80w90 for the REAR DIFF dyno oil.

I'm been searching and most are using 75w90. Is it better to use the 75?

 

say i go out for mobil one front and dif oil, which specs do i buy for it?

 

75w90 is the norm.

 

75/90 has the same lubricating properties as 80/90 and is interchangeable and compatible with 80/90. As for Mobile 1 or Amsoil 2000 series - use their 75/90 as the 75/140 is for large commercial/construction vehicles.

 

I've got Mobile1 syn everywhere in the truck now.

 

front and rear?

 

I run Amsoil in everything. I suppose it is probably time to change it out again, although I am not quite sure how often this needs to be done. Maybe I should do it every time I buy new tires. That would mean about every 45,000 to 55,000 miles.

Gadget, how often do you change your non-engine oils?

-Scott

 

As for the one question relative to front & rear differential - yes, run 75/90 in both differentials. As for the longevity of the synthetic gear lube - it's good for well over 200,000 miles. One normally doesn't change out a fully synthetic gear lube unless you get a little water in your housing. Commercial trucks running the Amsoil series 2000 gear lube usually change out around the 350,000 mile mark. I would think Mobil 1 gear lube is every bit as good as Amsoil.