Blackstone differential fluid analysis
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Did a search in the 100 section, there is nothing on this in the 200 section, guy did change and analysis on transfer case was still factory fill and fluid was still OK after 160k miles. diff's had been done and they recommended to do them again at another 20k. I don't think this is a issue. I'm just doing diff's to get the break in metal out after the first 30k miles.
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Check out ATF, Differential, Trans, Brakes, P/S | Bob Is The Oil Guy and Gear & Transmission Used/Virgin Oil Analysis | Bob Is The Oil Guy. Somewhere in there I suspect you'll find UOA and VOA.
Here's a VOA of the transfer case fluid from Toyota Transfer Gear Oil 75W VOA | Gear & Transmission Used/Virgin Oil Analysis | Bob Is The Oil Guy. So if you send in your used oil you'll have something to compare it to.
Toyota GMO 0W20 VOA as well
PQIA Toyota 0w20 results are something!! | Virgin Oil Analysis - PCMO/HDEO | Bob Is The Oil Guy
PQIA Toyota 0w20 results are something!! | Virgin Oil Analysis - PCMO/HDEO | Bob Is The Oil Guy
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Here's a VOA of the transfer case fluid from Toyota Transfer Gear Oil 75W VOA | Gear & Transmission Used/Virgin Oil Analysis | Bob Is The Oil Guy. So if you send in your used oil you'll have something to compare it to.
This is interesting the TAN was 4.1 on the 100 series Blackstone analysis that was run on the diff fluid that had 160k miles on the fluid that was the factory fill. Anyone know what Lexus/Toyota recommend as a change interval?