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Old 03-26-2012, 12:18 PM   #1
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Use Redline MTL and 70w90 in tranny?

I have sitting in my garage at my disposal 2 quarts of Redline synthetic MTL and 2 quarts of Redline 75w90 synthetic gear oil. Can I add both of these together into my AX-5? It would be nice not to have to buy one more quart of MTL since I have the 75w90 sitting right next to it... thanks for your advice!

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Old 03-26-2012, 12:41 PM   #2
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I wouldn't go mixing and matching on something like that. I mean, they're both synthetics.. but still.. 2 different weights makes me believe it won't mesh well.

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Old 03-26-2012, 12:54 PM   #3
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I just changed the trans fluid on my AX15 and used a mix of 2 Penzoil full syn and 1 Valvoline full syn 75w90. My trans never shifted so good. That mix was recommended to me by a trans. guy and it works great. As long as everything says it's compatible with... I don't see a problem.
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Old 03-26-2012, 02:19 PM   #4
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Thanks Denis and kik. I didn't think the mix would be the problem as you just get a median of the two weights but wanted to make sure. I know I mix in engines to get different weights on the fly with no ill effects but for a tranny ya never know til you ask... Thanks again.
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