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Clutch LSD Oil Change Interval

Originally Posted by marrawi Definitely love that oil cooler! But with an average 1 minutes per run on autocross, I will be shocked if I could boil the LSD oil.

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Old 11-03-2018, 05:07 PM   #1 (permalink)
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Originally Posted by marrawi View Post
Definitely love that oil cooler! But with an average 1 minutes per run on autocross, I will be shocked if I could boil the LSD oil. Going take my infrared thermometer to the next event and check the LSD cover temperature after each run. Thanks, Rusty!
When your lube temps get around 270F. It's starts to break down. This is the same for engine oil too. The higher the temp. The faster it breaks down. At 300F, it's cooked.
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Old 11-03-2018, 06:19 PM   #2 (permalink)
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When your lube temps get around 270F. It's starts to break down. This is the same for engine oil too. The higher the temp. The faster it breaks down. At 300F, it's cooked.
Which is why I sent the oil after two events to Blackstone, it seems that the oil wasn't cooked.
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Old 11-03-2018, 08:34 PM   #3 (permalink)
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Which is why I sent the oil after two events to Blackstone, it seems that the oil wasn't cooked.
If you do canyon carving it will be an issue. On the east coast, The Dragon is hell on diff fluid temps.
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Old 11-03-2018, 09:32 PM   #4 (permalink)
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If you do canyon carving it will be an issue. On the east coast, The Dragon is hell on diff fluid temps.
Diff temps on the Dragon will get to 255F without a cooler.
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Old 11-04-2018, 08:46 PM   #5 (permalink)
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Diff temps on the Dragon will get to 255F without a cooler.
The Dragon was the straw that broke the camel's back and why I got a MMA rear diff cooler.

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Old 11-04-2018, 09:11 PM   #6 (permalink)
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Diff temps on the Dragon will get to 255F without a cooler.
I was leaving a stinky trail behind me. LOL
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Old 12-10-2018, 03:40 PM   #7 (permalink)
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When your lube temps get around 270F. It's starts to break down. This is the same for engine oil too. The higher the temp. The faster it breaks down. At 300F, it's cooked.
Hey Rusty, the diff highest temp was 170F after Autocross lap, but it got to 230F after high-way driving for 1 hour (with 60-70F weather). I called MA-Motorspots john referred me to Brian who said that those numbers are not bad and I might not need a cooler. Thoughts?
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Old 12-10-2018, 03:56 PM   #8 (permalink)
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Hey Rusty, the diff highest temp was 170F after Autocross lap, but it got to 230F after high-way driving for 1 hour (with 60-70F weather). I called MA-Motorspots john referred me to Brian who said that those numbers are not bad and I might not need a cooler. Thoughts?
If you are using a temp gun. You are not getting a true lube temp. You could tack on another 10 degrees maybe more inside the diff.

What you got for doing a auto-x isn't bad. Street driving is getting up there. If you had a diff temp gauge. You would have a better idea of what's going on.

What gets me. Even the stock diff temps get up there close to cooking the lube.
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