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DIY: Transmission Oil Change

Originally Posted by rgunho I changed my Dif and Trans fluid at the same time. I used Lucas 75-90w Syn for both. After jacking up the car, the rear was

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Old 07-21-2014, 07:19 PM   #1 (permalink)
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Originally Posted by rgunho View Post
I changed my Dif and Trans fluid at the same time. I used Lucas 75-90w Syn for both. After jacking up the car, the rear was only slightly higher than the front.

I got about 2.75 quarts out of the Tranny and it took about 3 to refill.

I only got about 1.4 quarts out of the Diff and it took about 1.9 quarts to refill.

Does any of the oil get by the seals or burn up and any way? Just wondering why they seemed to be low on fluid? Car just hit 30k.
"Not right" is putting it mildly. By using a 75-90W diff fluid in your tranny, you've exposed the brass components in your six-speed tranny to high-pressure elements needed in a differential. But those same chemicals are caustic to softer metals like those found in the tranny, and can etch and damage them and the seals. Worse yet, it's easy to see this type of damage when you take it back to the dealer, who will then void your warranty. Hate to see a perfectly good Nissan Z tranny damaged by owner ignorance...
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