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Old May 5, 2015 | 11:47 AM
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Unhappy Tranny oil?

I realize this is a topic of much debate. I found an autozone oil that is Mercon compatible but not mercon V compatible. I am apprehensive to use a generic oil in my truck but its all I can find. The other option is Valvoline mercon V compatible. I dont have an owners manual but the repair manual says to not use mercon V compatible oil. Also the dip stick says Mercon. I guess while im asking about my tranny, I drained the fluid and it literally smells like sewage. Not overwhelming but its there. . . . And the drain plug wont come out. Is that actually a drain plug or just a bolt to hold the magnet in place? Thanks.
 
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Old May 5, 2015 | 12:17 PM
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Mercon V is backwards compatible, and I would personally recommend Valvoline over a non-branded oil which is not up-to-date with its specifications (Mercon only).
 
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Old May 5, 2015 | 12:47 PM
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so your saying that Mercon V would be fine in my 2002 4R100?
 
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Old May 5, 2015 | 01:55 PM
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MERCON V is the recommended fluid for a 2002 4R100. It wasn't that way when the truck was built, but MERCON V has changed since then and now is the right stuff.
 
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Old May 5, 2015 | 02:35 PM
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any thoughts on the oil smeeling like sewage? thanks for the quick replies
 
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Old May 5, 2015 | 03:06 PM
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It depends on your definition of "sewage". I've never though of ATF to be much of a favorable fragrance. I gage it on color (is it still red or has it turned dark) and if it smells burnt. I'm no mechanic (although I do pretend to be one in my driveway on a regular basis) so I'm sure Mark will have a better professional take on it. Where are you smelling it? Under the truck will have a stronger smell than sitting in a tub in the middle of the driveway. I've been using Mobil 1 Synthetic ATF since I bought my truck and have not had any transmission issues to date (knock on wood).


Originally Posted by sunny.richter
. . . . And the drain plug wont come out. Is that actually a drain plug or just a bolt to hold the magnet in place? Thanks.
On my 4x4 it is a drain plug. The magnet is a small donut that sits around the drain plug on the bottom of the pan.
 
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Old May 5, 2015 | 09:05 PM
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turns out the drain plug "nut" is pressed on the pan and the press is nolonger holding. Ill just pretend it dosent have a drain plug. It dosent leak It smells like sewage on my hand and from the tail shaft. It only smells burnt after it dried on my hand. Not a strong burnt smell at all. Ill prolly switch to synthetic later. this ******* has cost me too much already. Figured 10 grand would buy a truck you could just drive for a while. . . . WRONG! I noticed it while I was removing the pan after the tranny was out of the vehicle. Theres no other word for it than sewage. like opening a septic tank but not as strong.
 
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