2014 GS 350 AWD transfer case oil.
#1
Driver
Thread Starter
2014 GS 350 AWD transfer case oil.
I've scoured the owner's manual and they mention 75W-85 GL5 for rear diff, 90W GL5 for front diff. Nothing listed for the transfer case. Can anyone help out here? I'd like to change the lube in all. Thanks a million!
#3
'Page 71, maintenance manual - transmission/transfer case are sealed unit! Differential oils are top-offs only as described - unless you go off-roading.
Last edited by GXGSAm; 09-11-16 at 10:29 AM.
#4
No such thing as "lifetime" oil. It's a shame the transfer case oil cannot be changed. I guess time will tell if this was a smart or stupid move, my money is on the latter.
#5
#6
Sorry didn't mean to direct that at you and put it in quotes. When the manual says that it only needs topped off, they're suggesting its a lifetime fluid. From my experience there is no such thing. BMW/Mini tried this and was hit with a lawsuit from their owners for transmissions failing prematurely.
#7
Driver
Thread Starter
Transfer case oil.
I've not been under the car yet since I just got it. I know our AWD Mercury Mountaineer with full-time transfer case (Borg Warner) had fill and drain plugs. The oil, which was Mercon ATF, would get very dark so I would change it every 3rd engine oil change. Not we have a Jeep GC with full-time AWD and it too seems to dirty up the ATF+4 fluid. So I would like to figure out a way to change the transfer case oil on the GS 350. My neighbor had a 2005 Ford Mustang with a sealed transmission. We figured out how to replace the fluid on it Basically, Ford used an oil-pain with an extension tube inside. So you could fill it through a side plug, run the engine to circulate the ATF and then shut it off and pull a little plug on the oil pan. The oil would run out until the level was at the top of the extension tube. Put the bolt back in and good-to-go.
I'd sure like to get a maintenance manual for the GS 350. I get 4 free Services from Lexus but would rather do it myself. Appreciate all your replies. Thanks
I'd sure like to get a maintenance manual for the GS 350. I get 4 free Services from Lexus but would rather do it myself. Appreciate all your replies. Thanks
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#8
I called my dealer on this one... Not needed 'til 100k, requires a special machine and procedure. I'm doing spark plugs and 60k service myself today, but I'm going to let the dealer do this one in 40,000 miles.
#9
We all have our own preferences for maintaining our cars. For me, I like to over service them as we keep them a long time and simple fluid changes insures longevity from my experience. Since this project at most costs $15 and maybe 15 mins of my time, its very cheap insurance. The video footage of my magnetic drain plug alone should help sell the idea that maybe this isn't a bad idea to change the fluid sooner rather than later.
Last edited by RA051823; 09-12-16 at 10:32 AM.
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