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Differential fluid level check?

Tiny
RDANNENFELSER
  • MEMBER
  • 2001 FORD RANGER
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 210,000 MILES
When checking the level of differential fluid in a rear axle, should the fluid be checked warm after the vehicle has been driven or should it be checked cold?
Monday, March 16th, 2020 AT 11:51 PM

4 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

In the diagrams down below I have included the operating specs for your vehicle's rear differential including the cold capacity and fluid type. I hope this helps.

Thanks,
Alex
2CarPros
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Monday, June 7th, 2021 AT 12:47 PM
Tiny
RDANNENFELSER
  • MEMBER
  • 43 POSTS
To be honest, no, the images don't help. They provide info on the fluid capacity, features, specs, and parts of the rear axle, but I'm just wanting to know if the gear oil inside the differential should be at warm operating temperatue or cold ambient air temperature when checking the fluid level.
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Monday, June 7th, 2021 AT 12:47 PM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Actually, the lack of the instructions to say to measure it warm indicates that it should be measured cold.

Thanks,
Alex
2CarPros
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Monday, June 7th, 2021 AT 12:47 PM
Tiny
RDANNENFELSER
  • MEMBER
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Thank you.
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Monday, June 7th, 2021 AT 12:47 PM

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