08-29-2021, 10:37 AM | #71 |
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But cars don't care about wet bulb temperature, as they don't rely on evaporative cooling (well, at least the vast majority of cars don't). Cars use simple heat exchangers and these are governed by temperature differential and medium flow rate (air in our case), regardless of humidity.
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08-29-2021, 10:54 PM | #72 | |
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08-30-2021, 10:17 AM | #73 | |
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08-30-2021, 10:19 AM | #74 |
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Thinking an oil cooler prolongs the life of the oil in severe usage scenarios is laughable. I’d still do the oil change with or without the cooler.
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08-30-2021, 10:36 AM | #75 |
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Yep. Abuse is still abuse. kW of heat generated is still being passed through the oil and passed out to atmo. Same path, same abuse.
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08-30-2021, 02:19 PM | #76 |
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That is extremely excessive.
I don't disagree with ZDan on the fact that good oil can handle heat... If you're changing oil that often just because of heat you're doing it wrong. I tracked my GT350 a bunch and it was at ~285F all day long for 20+ minute sessions. I wasn't worried about it because it was using 5w50 oil. Stock 0w20 isn't going to work on the twins for heavy track use.
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08-30-2021, 03:16 PM | #77 | |
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08-30-2021, 03:41 PM | #78 | |
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15+ track days of experience later, I have an oil cooler and the oil is mostly clear when I change it once every 3 track days. |
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08-30-2021, 03:59 PM | #79 |
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Oh yeah?
Is that supposed to be some sort of empirical data point? |
08-30-2021, 08:39 PM | #80 |
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08-30-2021, 10:54 PM | #81 |
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I feel oil change per 3 track days is a bit too frequent. It won't do any harm but it bumps run cost and nuances a bit. I have some used oil analysis reports from Blackstone Lab after tracking 5 track days with 5w30 oil with oil cooler and I can share to you if you are interested. All the metrics from the reports were pretty good. Blackstone lab folks suggested me to run the oil a bit longer, which I did and I am waiting for my latest report from them.
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08-30-2021, 11:03 PM | #82 |
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If you can afford it, and are happy to do it, then replacing oil after every track day would be ideal you would imagine?
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08-30-2021, 11:11 PM | #83 |
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Yup, I'm aware that it's most likely too frequent.
It's just that it aligned well with my recent schedule of track days, autox'es and maintenance to do oil these changes "while at it". I figured I'd rather do an extra change to be on the safer side. Not scientific by any means |
08-30-2021, 11:21 PM | #84 | |
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