More on oil

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80/90 for the diff
75/90 for the t-case
I see some are using Mobil 1 gear oil 75/90 in diff's. Could there be a problem using 75/90 in the diff's? Mobil 1 75/90 flows like water and 80/90 is a lot thicker.
I use Mobil 1 75/90 in t-case.
Amsoil 80/90 in the diff's.

I was thinking of using Rotella T 5w40 snthetic oil but it is summer and the 5w is borderline for WI temp.If I was in AZ the Rotella tech said 5w is to low. I will wait till fall and use it. Rotella is a diesel but works for autos too. I use Mobil1 10w30 but should go to a 10w40 for summer. With 220,000 mi maybe I should have 50 for summer???
kurt
 
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-H-
Bummer! :(

Kurt,

-20f :eek: and i was complaining about the rain (drizzle)this morning on the way to work!!
I even had to put on some socks with my sandals :G
Eduardo
 
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SAE LS90 in Diffs, Gearbox and Transfercase.
ATF DextronIII in Power Steering Box.
Castrol GTX2 20W/50 in 1FZ-FE all year, Changed every 10,000km or 6 Months - What ever is first. :urinate:
 
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LS90. What does the LS stand for?
20w50 year round, you must live in Paradise.
Gearbox? We don't get a gearbox in USA.

We get a 'hydraulic pump that no one knows how it works/no one can work on, that changes gears so that you can hold a cell phone in one hand and hold a of cappuccino in the other, which has a cable on it that connects to the throttle that is not the same one that is in the service manual, that changes gears your you'.

My diff's call for SAE90 above 0 f
SAE80 or 80w-90 for below 0 f
I never seen 80W and 90 would be hard to find.
When I go to the parts house and ask for 75w90 the parts guy look at me and says 'theirs no such oil like that'. I was there the other day and he had it on the shelf. :tomatoe:

kurt
 
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LS90. What does the LS stand for?
Limited Slip as in L.S.D.(Limited Slip Diff). :stupid:
I Use LS90 instead of SAE90, Becouse there is a L.S.D. in the rear and is easier to have 1 type of Gear Oil. :givemebeer:
 
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This discussion of how oil viscosities compare, and which is best for hot temps made me look for some more info on the subject. Here are 2 very detailed (and hopefully technically accurate) articles. http://www.howstuffworks.com/question164.htm

http://auto.howstuffworks.com/frame...http://www.vtr.org/maintain/oil-overview.html

The charts that compare viscosity of gear oil to crankcase oil were new to me. 75W-90 pretty well equals 10W-50, and 80W-90 similarly equals 20W-50. See: http://www.superiorlubricants.com/classtable.html
 
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I'm running M1 Delvac (5w40) down here in Tucson. It was designed for truckers who drive from Texas to Alaska...works fine. Got 2 gallons of Rotella T synthetic (5w40) ($14/gallon at WalMart) since the Delvac is kind of pricey ($26/gallon at the Petro Lube). At the Petro Lube truckstop, I noticed they sold primarily Delvac (both synth and dino) and rotella (both synth and dino).

I'm sure glad the wind's coming out of the south...keeps all that smoke out of here. :)
 
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All new Diesel Engines that are mainly used on the Highway, Should be able to go until 1,000,000km before requiring a rebuild. With Engine Oil, Oil Filter, Fuel Filter and Air Filter done every 40,000km(Even btter with a ByPass Filter :D). :urinate:

If it were possible to fully filtrate Oil, Mineral Oil would last for ever, But Synthetic Oil will wear out over time(less than 20,000km) and will separte if it goes over about 115 Celcius.
 

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