11-08-2020, 11:57 PM | #29 | |
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11-09-2020, 12:08 AM | #30 | |
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11-09-2020, 10:25 AM | #31 | ||
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170F seems a bit on the low side... If worried you could send oil out for analysis. FWIW I drove surface streets across town mid-morning, very light traffic, taking it very easy, shifting ~3500-4000, probably never exceeded 40mph. 58F ambient temp, oil got up to normal operating 190F indicated in 12 minutes. |
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11-09-2020, 10:48 AM | #32 | ||
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11-09-2020, 12:03 PM | #33 |
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11-09-2020, 12:25 PM | #34 | |
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11-09-2020, 02:13 PM | #35 | |
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11-09-2020, 05:13 PM | #36 |
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And those readings would line right up with a thermostatic valve Sent from my iPhone using Tapatalk
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Kyle H. - #89 STX
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11-10-2020, 06:53 AM | #37 | ||
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S2000 (no oil temp or pressure gauges) only allowed full rpm range once coolant got up to normal, I probably zinged it to 9000 several times only just after that point. Engine still was goin strong at 240k miles and probably 50 track days when I sold it for BRZ. Quote:
[edit]Oh yeah, the real concern (I think) is oil never getting hot enough to boil off moisture, in which case yeah, if the hot side of the cooler is getting up to 180-190ish, that's probably OK... I've heard that temps are a lot slower to get to normal operating range even with a valve due to additional plumbing and perhaps some flow past valve? But again, with 0W or 5W oil, I wouldn't worry about going to redline once coolant is up to temp. Still, the more I research and learn about the whole oil cooler thing, the more I think *most* of us who track our street/daily cars semi-casually for shortish stints might actually be better off without one... Last edited by ZDan; 11-10-2020 at 10:14 AM. |
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11-10-2020, 10:43 AM | #38 |
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Love this subject, and it never ends haha. Definitely some good key points coming from a couple people here. I think one more somewhat important thing I'd like to add is recalling oil viscosity and its change in relation to temperature variances (though I'm sure you are all quite understanding of it). At cooler temps, you see exponential viscosity changes, hence why oil pressure change is significant between startup and operating oil temps. Once you are moving past these operating temps, oil viscosity changes less and less (significantly). We are talking less than 1 cSt for every 5-10F. So changes in oil pressure are small between say 220F and 275F as a random example.
The above statement is, of course, generalized as it has been proven that with our cars, oil pressure can vary from 70 down to 40 psi from 185 up to 225F respectively. Realistically, from every bit of research people have posted about this car, there is still not enough information. But our cars do hold up quite well with lightweight oils even when they take a beating. I think the most important thing still holds that a couple people mentioned here, which is having proper oil pressure at whatever temperature you are at. I believe a solid part of the reason that we are able to get away with having poor pressures at times has a lot to do with the quality of synthetic oils today, which is where ZDan and many others have been an example to not having issues. His reason for passing on an oil cooler is the same as mine, as I did not want to add other risks, and data flowing around on this forum has proven that an oil cooler isn't necessary (depending on driving/tracking style/amount). Though I cringe to think that consistent 272F can be normal and safe for our cars, I can see how it could hold up with good oil and shorter change intervals. Interested to see if you ever encounter problems down the road, and at what point of the cars life they would occur. I am following a similar route of staying away from a cooler and plan to drive the car to its death, so maybe I can have some useful information on my reliability many years down the road when no one will care anyway. |
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11-10-2020, 10:48 AM | #39 |
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FWIW, I have had 2 oil changes with no oil cooler.
I've had 2 oil changes w/forester coolant cooler I've had 2 oil changes w/Perrin cooler. Car went from DD, to AutoX DD, to Track DD. I just got my best oil sample back to date with a couple track weekends on it on a Perrin Cooler.
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11-10-2020, 11:03 AM | #40 | |
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11-10-2020, 11:45 AM | #41 | |
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11-10-2020, 01:17 PM | #42 | |
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