[Z06] 150* oil temp myth
05-18-2018, 03:04 PM
#1
150* oil temp myth
Hey guys super curious to how the 150* oil temp thing came up to wait for this tempature before beating on it. I was driving the c7z the other day and notice the digital dash had this yellow and red line across the rpms and would go away at 115* oil temp. Wouldn't that mean 115* is fine if that's what gm has on their cars? I know it's not the same car but it's still a motor.
thanks in advance
super curious cause this damn oil cooler on my z06 would take 20 minutes before reaching 150*
thanks in advance
super curious cause this damn oil cooler on my z06 would take 20 minutes before reaching 150*
Last edited by 427V8BB; 05-18-2018 at 03:05 PM.
05-18-2018, 03:21 PM
#2
I'd delete the cooler, run the covers, or install the thermostat for it. Only took me about 10 maybe 15min max when I was running the covers and now that I have the thermostat its only like 10 min.
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427V8BB (05-18-2018)
05-18-2018, 03:43 PM
#3
Racer
No shortage of opinions and myths on here.... definite shortage of supporting data. I'm sure you'll get the whole chemistry book as to why its 150, or 130, or whatever flavor of the week, but take it all with a grain of salt. I personally give it until about 110-120 before I let it loose a bit, and I'll bet a shiny penny my engine will last just fine. As long as you're not bouncing the rev limiter under 150 its good.
Last edited by LS1Steve; 05-18-2018 at 03:49 PM.
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427V8BB (05-18-2018)
05-18-2018, 04:49 PM
#4
Race Director
Yeah, really, if the oil is at 115, the engine is pretty warm already. The oil is pretty slow to warm up. When you splash warm oil on a hot surface, I bet the oil heats up pretty quick (locally).
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427V8BB (05-18-2018)
05-18-2018, 07:05 PM
#5
No shortage of opinions and myths on here.... definite shortage of supporting data. I'm sure you'll get the whole chemistry book as to why its 150, or 130, or whatever flavor of the week, but take it all with a grain of salt. I personally give it until about 110-120 before I let it loose a bit, and I'll bet a shiny penny my engine will last just fine. As long as you're not bouncing the rev limiter under 150 its good.
thanks
05-18-2018, 07:06 PM
#6
thanks guys always hated waiting till 150 by the time I got to work it got up to temp. So I would have to let it idle to 140 atleast then beat that son of a bitch all the way to work
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427V8BB (05-18-2018)
05-18-2018, 07:18 PM
#8
05-19-2018, 10:21 AM
#9
First of all, the 150ºF isn't a myth, it's simply opinion. Some people think lower is fine, some people think higher is better.
If you want to beat on your motor when the oil is 115ºF, go for it. Personally, I wait for ~170ºF or so. I have the patience to wait another 5 minutes for it to get from 115ºF to 170ºF.
If you want to beat on your motor when the oil is 115ºF, go for it. Personally, I wait for ~170ºF or so. I have the patience to wait another 5 minutes for it to get from 115ºF to 170ºF.
05-19-2018, 04:27 PM
#10
First of all, the 150ºF isn't a myth, it's simply opinion. Some people think lower is fine, some people think higher is better.
If you want to beat on your motor when the oil is 115ºF, go for it. Personally, I wait for ~170ºF or so. I have the patience to wait another 5 minutes for it to get from 115ºF to 170ºF.
If you want to beat on your motor when the oil is 115ºF, go for it. Personally, I wait for ~170ºF or so. I have the patience to wait another 5 minutes for it to get from 115ºF to 170ºF.
just trying to find what the lowest operating oil temp is and on my dads c7z it's 115. Didn't mean to hurt anyone with the word "myth" but if GM is putting out 115 I feel as that should be the lowest to start romping on it
Last edited by 427V8BB; 05-19-2018 at 04:30 PM.
05-19-2018, 06:15 PM
#11
Well I have noticed competitive mode is not available for a while once car is started from cold. Not sure at what temperature it gets activated but maybe that has something to do with oil temp?
05-19-2018, 07:14 PM
#12
Team Owner
DH
05-19-2018, 07:54 PM
#13
Well for me competitve mode does not become available until about 10-15mins after start up. Thought it may be because car not warmed up. Otherwise it would be available from get go.
05-19-2018, 08:10 PM
#14
i had it in eco mode r u talking about the c6? Ohhh actually you are right it's weird if I switch to competitive mode to traction and handling off then I try to go back to it and doesn't show up anymore.
Last edited by 427V8BB; 05-19-2018 at 08:12 PM.
05-19-2018, 09:06 PM
#15
Melting Slicks
Do you have a C7 or C6? I have always been able to put my C6 Z06 into competitive mode no matter what the oil temp is.
05-19-2018, 09:32 PM
#16
05-20-2018, 12:35 PM
#18
I'm a firm believer in warming your oil up in a "dry sump system", definitely sucks in the Z06 how long it takes to get to 145-150, oil coolers do their job for sure. When we moved up to the ZR1 it was very noticeable how much faster the oil came up to temp, probably half the time. I always have the oil temp display up, lots of money under that hood what's a few more minutes!
05-20-2018, 03:02 PM
#19
Supporting Vendor
There isn't a magic temperature at which your oil is suddenly at temp. It's a spectrum. Your engine isn't going to blow up if you floor it when oil is at 90F either. But there could be significant damage if engine oil is at, say, -40F, where the viscosity is extremely high and won't lubricate your bearings properly.
There are actually two factors that come into play. The temperature of the metal, and the viscosity of the oil. In most cases, metals wear less when they are warm as the coefficient of friction tends to decrease. And oil lubricates best when it's at the correct viscosity for the engine. Since engine oil viscosity is rated at 100C (212F), this typically happens when it's closer to that temperature.
To put it simply, the cooler the engine is, the more engine wear you get. If temps get too high, you will have lubrication issues due to the engine oil viscosity getting too low, bearing clearances getting too small, as well as other engine components deteriorating due to reaching the max operating temps (such as seals, gaskets, etc).
The chart attached is for cylinder wall wear, and coolant temp is usually a better indicator of those temps. But oil temp is probably a better indicator of bearing temps.
Personally, I try to wait for oil temps to reach 160F or so before going above 3-4k or so, but you won't blow anything up if you rev higher than that after startup every now and then when temps are still around ambient (80F-100F, I live in Florida). We have probably all done that a few times. But if you're in a freezing climate, you probably already know you should wait for the engine to warm up a bit before you can even drive the car.
There are actually two factors that come into play. The temperature of the metal, and the viscosity of the oil. In most cases, metals wear less when they are warm as the coefficient of friction tends to decrease. And oil lubricates best when it's at the correct viscosity for the engine. Since engine oil viscosity is rated at 100C (212F), this typically happens when it's closer to that temperature.
To put it simply, the cooler the engine is, the more engine wear you get. If temps get too high, you will have lubrication issues due to the engine oil viscosity getting too low, bearing clearances getting too small, as well as other engine components deteriorating due to reaching the max operating temps (such as seals, gaskets, etc).
The chart attached is for cylinder wall wear, and coolant temp is usually a better indicator of those temps. But oil temp is probably a better indicator of bearing temps.
Personally, I try to wait for oil temps to reach 160F or so before going above 3-4k or so, but you won't blow anything up if you rev higher than that after startup every now and then when temps are still around ambient (80F-100F, I live in Florida). We have probably all done that a few times. But if you're in a freezing climate, you probably already know you should wait for the engine to warm up a bit before you can even drive the car.
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427V8BB (05-20-2018)
05-20-2018, 03:19 PM
#20