Trans fluid change gone wrong
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Junior User
Joined: Jun 2007
Posts: 70
Likes: 0
From: Salisbury, NC
Trans fluid change gone wrong
I recently went to Jiffy Lube had the transmission flushed and changed the oil in the transfer case. Now my truck is making a knocking noise when i slow down to stop, accelerate, and drive in reverse. It does not do it all the time but about half the time. Any help would be greatly appreciated i'm towing a 6x12 trailer 2000 miles in 10 days from now and would like to figure this out before my trip.
Fleet Mechanic
Joined: Nov 2000
Posts: 1,713
Likes: 2
From: In my House
You mentioned "oil" in the transfer case. Is that what they put in there? gear oil? If so, you had better have them drain it out. The T-case takes roughly 2 quarts of ATF just like the transmission.
Rich
Rich
Posting Guru
Joined: Oct 2005
Posts: 2,209
Likes: 1
From: Louisville, Kentucky
Mercron V is a fully synthetic transmission fluid. No additive can be added to standard transmission fluid to make it meet Mercron V specifications. Either do it yourself or take it to the dealer for a fluid change using Mercon V. Good luck! 
Senior User
Joined: Feb 2005
Posts: 240
Likes: 0
From: Meridian, ID
I think you're problem can be identified by "Jiffy Lube" alone.. 
I've never had any luck at those quick lube places. I think twice was all it took for jiffy lube to put the wrong weight oil in my truck when I EXPLICITLY told them to put the correct oil in - its even printed on the dang filler cap!
Another place I tried to get the trans fluid flushed and they couldn't get the lines off without worrying they were going to break or strip something on the radiator. From those experiences I will NEVER take my rig to a quick lube place (esp. jiffy lube). Instead I do it myself or pay the premium and take it to the dealer. 
I've never had any luck at those quick lube places. I think twice was all it took for jiffy lube to put the wrong weight oil in my truck when I EXPLICITLY told them to put the correct oil in - its even printed on the dang filler cap! Another place I tried to get the trans fluid flushed and they couldn't get the lines off without worrying they were going to break or strip something on the radiator. From those experiences I will NEVER take my rig to a quick lube place (esp. jiffy lube). Instead I do it myself or pay the premium and take it to the dealer.
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