Oil Temps
Thread Starter
Drifting
Joined: Apr 2019
Posts: 1,562
Likes: 324
From: Morristown, TN
Oil Temps
My oil temps get crazy high while driving the car hard on curvy roads. Is this an actual issue or COULD the LTs b getting the sensor area hot and making it look like the oil temps are getting up?
I mean I have seen as high as 285° (not to mention Im running Rotella T SAE 15w-40 Diesel oil in the car per recommendation of Texas Speed) just running the 11 miles of the Dragon staying in 2nd/3rd gear, mainly 2nd. But I thought ya know these cars are sports cars made to be driven or is that just a bunch of BS like they say for the 1LE Camaros and Z51 C8s that they say is track ready but also turn around and say if its damaged they may not honor the warranty.
I mean I have seen as high as 285° (not to mention Im running Rotella T SAE 15w-40 Diesel oil in the car per recommendation of Texas Speed) just running the 11 miles of the Dragon staying in 2nd/3rd gear, mainly 2nd. But I thought ya know these cars are sports cars made to be driven or is that just a bunch of BS like they say for the 1LE Camaros and Z51 C8s that they say is track ready but also turn around and say if its damaged they may not honor the warranty.
Last edited by dskinsler83; May 27, 2020 at 06:31 PM.
Administrator
Joined: Mar 2001
Posts: 367,781
Likes: 24,683
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Moved to C5 Tech.
Drifting
Joined: Sep 2009
Posts: 1,862
Likes: 594
From: Prescott, Arizona
The oil temperature sender unit is easily changed, especially with stock exhaust. I might first do that. Here is a video showing changing it with an aftermarket exhaust:
And a good source for one:
http://www.improvedracing.com/oiling...814-p-334.html
And a good source for one:
http://www.improvedracing.com/oiling...814-p-334.html
Safety Car
Joined: Oct 2007
Posts: 4,198
Likes: 1,072
From: South Florida
Try to keep the oil between 215*F and 235*F
I never run oil above 240*F in any engine unless its a race for money and I don't care about the engine
Coolant should be 210-225*F
Unless forced inducted, then you want things a bit cooler for the headroom of inevitability
also you should not be red lining it or anywhere close to that unless making an all-out pass on a mile strip or something to set a record
I never run oil above 240*F in any engine unless its a race for money and I don't care about the engine
Coolant should be 210-225*F
Unless forced inducted, then you want things a bit cooler for the headroom of inevitability
also you should not be red lining it or anywhere close to that unless making an all-out pass on a mile strip or something to set a record
Thread Starter
Drifting
Joined: Apr 2019
Posts: 1,562
Likes: 324
From: Morristown, TN
Try to keep the oil between 215*F and 235*F
I never run oil above 240*F in any engine unless its a race for money and I don't care about the engine
Coolant should be 210-225*F
Unless forced inducted, then you want things a bit cooler for the headroom of inevitability
also you should not be red lining it or anywhere close to that unless making an all-out pass on a mile strip or something to set a record
I never run oil above 240*F in any engine unless its a race for money and I don't care about the engine
Coolant should be 210-225*F
Unless forced inducted, then you want things a bit cooler for the headroom of inevitability
also you should not be red lining it or anywhere close to that unless making an all-out pass on a mile strip or something to set a record
ummm where did all those numbers come from? Coolant over 200 is hot for GM and I dont redline it but I run it up to red line in the straights but normally stays 3500-4500
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Drifting
Joined: Apr 2019
Posts: 1,562
Likes: 324
From: Morristown, TN
The oil temperature sender unit is easily changed, especially with stock exhaust. I might first do that. Here is a video showing changing it with an aftermarket exhaust:
https://www.youtube.com/watch?v=edMQqHUz7Vc
And a good source for one:
http://www.improvedracing.com/oiling...814-p-334.html
https://www.youtube.com/watch?v=edMQqHUz7Vc
And a good source for one:
http://www.improvedracing.com/oiling...814-p-334.html
it has a new sensor in it already.
Safety Car
Joined: Oct 2007
Posts: 4,198
Likes: 1,072
From: South Florida
Higher temperature improves efficiency, economy, and reduce wear
Most cars including GM run 210-225*F regular operating range.
Remember that sensor position matters. If the sensor is on one side of the engine or the other it may read 10 or 15*F difference than actually what is coming out of the engine.
Likewise some sensors are mounted near the inlet of what the engine is experiencing, not outlet.
So you have to be careful when quoting what number is 'hot' or 'cold'.
I like to see it go in around 188*F minimum and out around 10 or 15*F higher.
Temp rise is inevitable with near-stock cooling equipment and forced induction. So it depends on the application how you set up the cooling system, i.e. if the cooling reservoir is 'small' (not alot of coolant/small radiator etc) and there is no oil cooler to help (oil cooler helps to also control coolant temps and is critical for high performance applications in high temperature settings) then we want an even lower inlet temp to give headroom for the temp rise.
Thread Starter
Drifting
Joined: Apr 2019
Posts: 1,562
Likes: 324
From: Morristown, TN
Hmmmm very interesting. Not what I have been told about these cars, course that cane from the same shop that will no longer return messages etc.
Its just a NA forged 383 with PRC heads and LTs
Its just a NA forged 383 with PRC heads and LTs
Safety Car
Joined: Mar 2005
Posts: 3,742
Likes: 1,205
From: Wisconsin
Here's how the factory service manual describes cooling fan operation, this is normal operating temps
The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is turned off if the coolant temperature lowers to 108°C (226°F). When the A/C is on and the coolant temperature reaches 85°C (185°F), the low speed cooling fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is turned off if the coolant temperature lowers to 108°C (226°F). When the A/C is on and the coolant temperature reaches 85°C (185°F), the low speed cooling fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
Thread Starter
Drifting
Joined: Apr 2019
Posts: 1,562
Likes: 324
From: Morristown, TN
Ok so the car is running a 160° thermostat and I assume tuning has been done on the fans but it runs 190° most the time.
Coolant fans arnt this issues. Its oil temp. What do these manuals say about oil temp? I am pretty sure if it hits 285° it will give a message about reducing engine RPM etc.
Coolant fans arnt this issues. Its oil temp. What do these manuals say about oil temp? I am pretty sure if it hits 285° it will give a message about reducing engine RPM etc.