Vehicle Questions and Answers
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For the 2000 Ford Ranger rear differential, you'll need around 3 quarts of gear oil. The recommended viscosity is 75W-90 synthetic gear lube. There are various brands available, with Lucas Oil and Mobil 1 being highly regarded by consumers for their quality. Prices for gear oil can range from $7 to $15 depending on the brand and additives included. It's important to check and replace the fluid in your differential every 30,000 to 60,000 miles. If you frequently drive in rough conditions or tow heavy loads, consider checking it more frequently.
2.5 quarts. Add oil until it reaches the bottom of the fill hole without overflowing. William, you missed the mark by a long shot.
When working on Ford vehicles with 7.5 and 8.8 rear ends, you'll need around 2.5 quarts of 75w90 gear oil. If your rear end has limited slip, be sure to also add a friction modifier as needed.
In a 2000 Ford Ranger, you'll need about 6 quarts of rear differential fluid.
I recently replaced my rear axle seal and added 2 quarts of differential oil. How many more quarts would you suggest I add?