HELP!!! Manual Tranny Noises
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Joined: Apr 2008
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HELP!!! Manual Tranny Noises
Hello, I have 1998 F150 stand cab long bed. 106,000 +/- miles and the manual transmission is getting noisy. i just got laid off and cant afford to fix or replace tranny. I have changed fluid religiously with the recommended automatic trans fluid even though its a manual. Question, can i used another fluid to help lubricate to extend life? Maybe 50% auto fluid & 50% gear fluid?
ANy help welcome THANKS FOR YOUR TIME.
ANy help welcome THANKS FOR YOUR TIME.
Posting Guru
Joined: Oct 2005
Posts: 2,209
Likes: 1
From: Louisville, Kentucky
Welcome to FTE renoka! 
I am no expert on your transmission by any means. A noisy transmission is already worn out and there is no "magic mystery oil" that is going to help prolong its working life.
I hate to admit this but I once had a Ford Ranger that I made a similar mistake with. Had a leak from the shifter rail plugs. When I replaced the plugs, I changed the fluid for 90W gear oil. An otherwise good transmission soon failed on me due to the heavy gear oil. I would not recommend anything but Mercon V in that transmission. Good luck!
I am no expert on your transmission by any means. A noisy transmission is already worn out and there is no "magic mystery oil" that is going to help prolong its working life. I hate to admit this but I once had a Ford Ranger that I made a similar mistake with. Had a leak from the shifter rail plugs. When I replaced the plugs, I changed the fluid for 90W gear oil. An otherwise good transmission soon failed on me due to the heavy gear oil. I would not recommend anything but Mercon V in that transmission. Good luck!
Cargo Master
Joined: Apr 2001
Posts: 2,220
Likes: 26
KingRanchMan02 is correct. I had a customer who wasted his transmission by running gear oil in it.
Are you sure it's the transmission making the noise and not the clutch? Describe the noise. Does it change when you press the clutch pedal? Is the clutch slipping?
Are you sure it's the transmission making the noise and not the clutch? Describe the noise. Does it change when you press the clutch pedal? Is the clutch slipping?
Junior User
Joined: Apr 2008
Posts: 99
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From: Manitoba
Good points. Another good indicator that the transmission is the culprit here is if it is quiet or quieter in 4th gear. The regular failure for these transmissions, as mentioned by KRM02, is leaking plugs on the shift tower which in turn causes the input shaft and cluster gear to burn out.
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