Transmission, T-Case, Differential Fluid Changes - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 02-21-2018
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Transmission, T-Case, Differential Fluid Changes

Hello,
I have been doing plenty of research, but before I go ahead and make the changes I wanted to verify with you guys that this is the right way to go.
I just purchased a 2009 Ford Ranger 2.3L 2WD Manual 5 Speed little truck with 34,000 miles. The fact that the oil fluids are almost 10 years old to me tell me its time to make changes, besides it gives me peace at mind that I know what the car has and when it was done.
I have always used AMSOIL on all my cars/trucks, so that is my choice. I am not here to debate on which is the best that is solely my preference and I have never had issues.

I understand the following and correct me if I am wrong, please.
Transmission 5 Speed (I believe is M5R1HD) - Need less than 3quarts
AMSOIL OE Full Synthetic - Automatic Transmission
Fill and drain plug are on transmission case bottom of car. No need for filter

T-Case - Need less than 2 quarts
AMSOIL OE Full Synthetic - Automatic Transmission
For the year of my truck, I haven't found a good picture or something that shows the location for the fill/drain plug, any help would be greatly appreciated.

Differential - Less than 3 quarts
AMSOIL 80W-90 Gear Oil
Need to remove diff cover, fill plug is behind diff (pointing towards front of car)

In addition to all of that, I will also be doing the engine oil and air filter, but I use Castrol for that and no need to discuss.
I am planning on making a video, just for kicks.

Thanks!
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Old 02-21-2018
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You are right about the amount of ATF for the transmission. You do not have a transfer case with a 2WD Ranger. I don't remember the amount of gear lube required for the differential but 3 quarts sounds about right and 80W-90 will work just fine.

I use synthetic lubes for everything. As far as the engine that is up to up to you but I very much recommend using a Motorcraft filter. Some filters don't have a anti-backflow valve and can starve the engine of oil at startup.
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Old 02-21-2018
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I doubt the 4-cyl would have limited slip rear axle but you should look at drivers door tag to make sure.
See here: Ford 7.5 & 8.8 Inch Axle Tag & Door Codes

Because you do need to add Friction Modifier if it does have Fords Trac-lok limited slip rear axle
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Old 02-24-2018
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Thanks guys!
I ended up AMSOIL Signature Series on the Transmission, which automatically made a world of difference, the fluid was very dark so I am glad I did it as well. I went Royal Purple 5W-20 with the Engine and Mobil1 Filter (I couldnt find any filter, even motor craft that didn't have the bypass valve..), with K&N Air Filter and the engine already feels smoother and more responsive. Oil was darken too when it was removed.

Question for you experts though, I have 3 Quarts of MT-90 Redline Gear lube that I would like to use, but I am not sure if I can use that with the differential. You guys have any clue as to, if this is ok to use with the ranger? I am sure I don't have to add any additives as this is the XL 2WD model (no limited slip), at least the window sticker says nothing of it.
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Old 02-26-2018
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any help??
Question for you experts though, I have 3 Quarts of MT-90 Redline Gear lube that I would like to use, but I am not sure if I can use that with the differential. You guys have any clue as to, if this is ok to use with the ranger? I am sure I don't have to add any additives as this is the XL 2WD model (no limited slip), at least the window sticker says nothing of it.
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Old 03-02-2018
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Look at the door tag for the axle code or there is a tag on the axle it will tell you the gears. Look for a 3 73 or a 3L73. The L stands for a posi unit. You could have other gearing but that is a pretty common one I used for reference. I would just use standard 75-90w fluid though. It's not a performance application so it doesn't matter much.
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