How often do you change your diffs
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JTK
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It depends on your usage, but one or two drain/fills is probably all you need. I like to hit them at 20-40Kmi and then I've never owned a vehicle long enough to do another. Years ago diffs were never touched unless there was an axle seal, bearing or general leak which prompted the service, yet they lasted the life of the vehicle.
Joel
Joel
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Originally Posted By: JTK
Years ago diffs were never touched unless there was an axle seal, bearing or general leak which prompted the service, yet they lasted the life of the vehicle.
Joel
Today's differentials are not one half as durable as those made 15-20 years ago. Cost reduction engineering has taken it's toll on longevity.
Years ago diffs were never touched unless there was an axle seal, bearing or general leak which prompted the service, yet they lasted the life of the vehicle.
Joel
Today's differentials are not one half as durable as those made 15-20 years ago. Cost reduction engineering has taken it's toll on longevity.
Every 60K miles...you will be just fine!
My Wrangler(94, bought new by my brother) never had its diff fluids changed in over 14 years 225k+ miles.
I do it now because I don't own another 4.0L Jeep and its a preventive type affair. That Jeep was the most reliable ride I've owned.
I do it now because I don't own another 4.0L Jeep and its a preventive type affair. That Jeep was the most reliable ride I've owned.
Originally Posted By: PT1
Today's differentials are not one half as durable as those made 15-20 years ago. Cost reduction engineering has taken it's toll on longevity.
I disagree! Todays truck differntials are worked twice as hard as those 20 years ago. Look at the tow ratings of todays full size trucks compared to yesteryear. It's probably double!
Also, most truck diffs haven't really changed. The GM 10 bolt, Ford 8.8, Ford Sterling/Visteon axle, Any Dana axle, and the newer AAM axles are pretty beefy!
Today's differentials are not one half as durable as those made 15-20 years ago. Cost reduction engineering has taken it's toll on longevity.
I disagree! Todays truck differntials are worked twice as hard as those 20 years ago. Look at the tow ratings of todays full size trucks compared to yesteryear. It's probably double!
Also, most truck diffs haven't really changed. The GM 10 bolt, Ford 8.8, Ford Sterling/Visteon axle, Any Dana axle, and the newer AAM axles are pretty beefy!
The fluid in my Crown Vic had been in there a minimum of 7 years and 45,000 miles. The gears looked brand spanking new, and everything was clean. I put in some Amsoil Severe Gear 75W-90, and some Slip lock additive when I installed the limited slip differential. I don't plan on changing the fluid until I need to rebuild the LSD.
Changed my front diff/transmission to Amsoil 75w110 severe gear at 9k in my 08 LGT....substantially quieted it down....and my rear diff at 30k. Subaru specs say both should be changed every 30k.
It's the equivalent of changing the oil, so no big deal to me.
It's the equivalent of changing the oil, so no big deal to me.
I would argue that your 2nd fill should be good for 100k miles. most of the wear metals occurred during break in and its best to get them outa there. beyond that, synthetic is good for a long time. unless you offroad alot in deep water.
just changed the rear diff and manual transmission fluid in my ranger. i used the proper amsoil fluid for both. the ranger now has 124,000 miles. last tank of gas went 25.3 mpg, all city driving.
I changed it at about 30k on it with Amsoil Severe Gear 75W110. Will not get changed until I get the 3.55s and Detroit TrueTrac, which could be awhile.
Did it at 60k in the '98 Sienna (M1 ATF) and don't plan to do it again. Presently have over 160k miles.
Every 2 to 3 years should be good unless you are really hard on it.
When I drag the diff over a rock and pull the lip of the cover back enough to cause a leak...Reminds me I need to check the 60k Explorere diffes.
Originally Posted By: Bryanccfshr
When I drag the diff over a rock and pull the lip of the cover back enough to cause a leak...Reminds me I need to check the 60k Explorere diffes.
I got tired of that thin leaky flimsy easily bent POS diff cover on my Crown Vic, and bought a Marauder cover off of Ebay. Much, much more heavy duty, and when sealed with a Lube Locker gasket, I don't see this thing ever leaking without some serious damage happening.
When I drag the diff over a rock and pull the lip of the cover back enough to cause a leak...Reminds me I need to check the 60k Explorere diffes.
I got tired of that thin leaky flimsy easily bent POS diff cover on my Crown Vic, and bought a Marauder cover off of Ebay. Much, much more heavy duty, and when sealed with a Lube Locker gasket, I don't see this thing ever leaking without some serious damage happening.
I changed both diffs in my Jeep at 29,000 with Amsoil Severe Gear 75W-90. I doubt I will change them again. I think Amsoil calls for 100,000 intervals in normal service.
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