01-31-2017, 05:03 PM | #85 | |
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02-01-2017, 06:31 PM | #86 |
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With using that calculator would it not be possible to work out a recommended oil weight for an operating temperature? For example if you see 220F sustained at the track you should use X weight. If you see 240F sustained at the track you should use an X weight?
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02-01-2017, 07:30 PM | #87 | |
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I suppose you could get a rough idea, there would be many variables I'd imagine. Dezoris has good data here. http://www.ft86club.com/forums/showthread.php?t=76760 With his car, using the viscosity calculator, the lower limit on the viscosity across the 3 grades for what he deemed adequate oil pressure at varying temperatures is ~8.0-8.5. My plan for my car and autox is bump up an oil grade, 30wt, and monitor the oil pressure and temperature changes. If I don't like the results I'll try a light 40wt or get an oil cooler. I don't think I need more than a 30wt oil as its just autox. |
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02-12-2017, 08:18 PM | #88 |
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A bit of a bump here. Oil cooler is now in, do you guys recommend 0-20 with the oil cooler or still 5-30?
I'm thinking if you can keep the 0-20 relatively cool then it's properties should be ok. The reason for going back to 0-20 would be to maintain greater pressure than 5-30 to somewhat compensate for the oil cooler. |
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02-13-2017, 08:35 AM | #89 | |
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02-15-2017, 09:21 PM | #90 | |
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02-27-2017, 10:20 PM | #91 | |
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I am scheduled for my first driver training and track day 3/7/17 and am still uncertain whether to keep the OEM oil or go 5W30. I have a case of it in my garage as it's what I run in my truck. My question is what exactly you mean by 'hardcore track use'? Does one day qualify as hardcore for the oil or do you mean multiple track times?
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02-27-2017, 10:26 PM | #92 | |
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02-28-2017, 08:56 AM | #93 | |
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Basically, we never recommend people run 0W20 on track. Odds are your engine will be fine, but based on what we've see with sensors, 5W30 is likely safer for the engine. |
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05-04-2017, 11:50 AM | #94 |
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That is the part that doesnt make sense though. All things being equal, an increase in oil viscosity will always increase oil temperatures. If you see lower or same max oil temps when going from 0w20 to 5w30, that leads me to believe that the testing conditions were more favorable for 5w30.
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05-04-2017, 12:22 PM | #95 | |
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Im just speculating here, just trying to keep the discussion going in a sane/interesting direction. |
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05-04-2017, 01:37 PM | #96 | |
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05-04-2017, 01:54 PM | #97 | |
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Check out Stribeck curve (Fig 14) here: http://edge.rit.edu/edge/P14453/publ...l_Bearings.pdf |
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05-04-2017, 02:46 PM | #98 |
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