Differential Fluid
#1
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Differential Fluid
My Lexus LS400 98 has over 300k mile on it. When is it recommended to change the Differential oil? and how to properly clean and maintain it? Do not have any service record of it. And how to check if its in good condition?
#2
this might prove useful...
http://www.lexls.com/tutorials/suspe...iffchange.html
Owner's manual should give you recommendations on how often to change it... don't have mine readily available, but seems like every 30k sounds about right.
Color and metal deposits that collect on the drain plug magnet will be tell-tale signs.
As a single digit poster... might want to take some time to read the FAQs and stickies at the top... most of your normal maintenance questions are addressed there.
Welcome to the club.
http://www.lexls.com/tutorials/suspe...iffchange.html
Owner's manual should give you recommendations on how often to change it... don't have mine readily available, but seems like every 30k sounds about right.
Color and metal deposits that collect on the drain plug magnet will be tell-tale signs.
As a single digit poster... might want to take some time to read the FAQs and stickies at the top... most of your normal maintenance questions are addressed there.
Welcome to the club.
#6
Super Moderator
iTrader: (6)
Mobil 1 or a compatible weight gear oil that is available in your area. 100K intervals is fine, I've tended to be a bit early and have done it at 100K and then at 150K. With 50K miles on it, it came out looking and smelling as if it were put in the day before.
This derails the discussion: I would also suggest inspecting the tranny fluid since you are being systematic at making sure your LS is in top running order. If it is red, you are good, any darker shade of burgundy to black, do the partial drain routine. We have discussions on this in the FAQ to reference.
With the differential and tranny, make sure you have a fresh washer, do not reuse the old one.
This derails the discussion: I would also suggest inspecting the tranny fluid since you are being systematic at making sure your LS is in top running order. If it is red, you are good, any darker shade of burgundy to black, do the partial drain routine. We have discussions on this in the FAQ to reference.
With the differential and tranny, make sure you have a fresh washer, do not reuse the old one.
#7
Lexus Test Driver
i used pennzoil gearplus 80W-90 GL-5. owners manual says to use 80W-90 GL-5 so that's exactly what i gave it
and yeah make sure to use a new crush washer for each of the diff bolts
and yeah make sure to use a new crush washer for each of the diff bolts
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#8
Lexus Champion
iTrader: (4)
trans fluid change(fluid exchange)=30,000
brake fluid change=every 2-3 years (im in california) dot 4 btw which is a little more hygroscopic than dot 3
coolant change= every 3 years or 25,000 miles (which ever is first)
power steering fluid= i turkey baste out of the reservoir every 6 months,then have it flushed every few years
diff. fluid=follow ra40's advice
brake fluid change=every 2-3 years (im in california) dot 4 btw which is a little more hygroscopic than dot 3
coolant change= every 3 years or 25,000 miles (which ever is first)
power steering fluid= i turkey baste out of the reservoir every 6 months,then have it flushed every few years
diff. fluid=follow ra40's advice
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#9
I change mine at 75K with Amsoil. I ran a tube from the fill hole up out above the right rear tire and put a funnel on the end of the tube. Keep a catch pan under the rear end. Pour and fill till it won't take anymore. Pull out tube and let it run until it quits. Replace plug and make sure you write down when you changed it.
#10
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LS400 98 Differential
I have LS400 98 model over 300K miles on it. Is is possible to open up the rear differential and get it cleaned then put the new oil in it? And should i put LSD gear oil GL-5 85W-90? i dont have the service manual
#12
If 98's are like the older ones then GL5 85W-90 will work. I don't know about the newer stuff but the older ones did not do positraction so no need for special gear oil. Trac was the posi traction.
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