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  #1  
Old 02-07-2010, 09:26 AM
zlliao zlliao is offline
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Default misused rear differ oil

Used 80w-90 for rear differ in the last service, while the recommended is 75w-140 for the 2003 FX4. Is it a big issure? Do I have to redo the service? Thanks.
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Old 02-07-2010, 02:58 PM
Fx4wannabe01 Fx4wannabe01 is offline
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are you using synthetic? if you are, good to go. I feel that thick of oil(the 140) is dumb, espicially in the wintertime when it turns to goo.



Just by that tag, I can tell you've go a Level II. lol.
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Old 02-07-2010, 09:17 PM
zlliao zlliao is offline
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Yes it was synthetic. So I can try to drive it normally. I say try to, simply because I'm still struggling with the sticky shift. Thanks a lot.
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