What do you consider standard op. temp for oill?
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Oil will climb significantly above the coolant temperature only under certain circumstances. You really need sustained high engine RPM to get oil temperature to rise significantly. Idling around, and even sitting in traffic, is fairly "easy" on oil from a temperature standpoint. Generally, the oil temperature will loosely correlate with your coolant temperature, but there are a lot of variables. I wouldn't consider 220 deg F abnormal for oil temperature, and it's good that it never climbs above that.
(I would guess, though, that, unless you have an external oil cooler, your oil temperature would climb if you tracked your car or otherwise drove around at high RPM all the time. Try the interstate in 3rd gear and see if the oil climbs above that mark.)
(I would guess, though, that, unless you have an external oil cooler, your oil temperature would climb if you tracked your car or otherwise drove around at high RPM all the time. Try the interstate in 3rd gear and see if the oil climbs above that mark.)
I would say 95-105C is the average engine oil operating temperature.
That is the equilibrium state when oil is sufficiently warmed up and coolant is ~95 to 100 C.
Constant spirited driving or towing will push the oil temperature to 115-125C and the rise beyond that depends on radiator, fan size/speed, oil cooler sizing etc.
That is the equilibrium state when oil is sufficiently warmed up and coolant is ~95 to 100 C.
Constant spirited driving or towing will push the oil temperature to 115-125C and the rise beyond that depends on radiator, fan size/speed, oil cooler sizing etc.
Originally Posted By: MoparMan1891
I would say 95-105C is the average engine oil operating temperature.
That is the equilibrium state when oil is sufficiently warmed up and coolant is ~95 to 100 C.
Constant spirited driving or towing will push the oil temperature to 115-125C and the rise beyond that depends on radiator, fan size/speed, oil cooler sizing etc.
Can you tell us in F as well as C? Thanks
I would say 95-105C is the average engine oil operating temperature.
That is the equilibrium state when oil is sufficiently warmed up and coolant is ~95 to 100 C.
Constant spirited driving or towing will push the oil temperature to 115-125C and the rise beyond that depends on radiator, fan size/speed, oil cooler sizing etc.
Can you tell us in F as well as C? Thanks
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Originally Posted By: tig1
Can you tell us in F as well as C? Thanks
Google is your friend here.
Can you tell us in F as well as C? Thanks
Google is your friend here.
Highway driving with 100* outside temps, my Sportwagen 1.8T is usually around 221 F. Up longer hills I've seen 230, maybe a high of 235. Down those hills it drops to 209.
I added a full engine pan / splash shield from Euro Golfs and the lack of cooling vents upped my temps by 3-5*, from previous. The shield is for an Audi A3, so my lowly Sportwagen shouldn't produce as much heat, so I'm not worried. My temps now are in line with what stock US GTIs seem to report.
I read that under 250 F and you're fine.
Previous to owning a car with an oil temp gauge, I never cared. Just one more thing to play with on long drives, now.
I added a full engine pan / splash shield from Euro Golfs and the lack of cooling vents upped my temps by 3-5*, from previous. The shield is for an Audi A3, so my lowly Sportwagen shouldn't produce as much heat, so I'm not worried. My temps now are in line with what stock US GTIs seem to report.
I read that under 250 F and you're fine.
Previous to owning a car with an oil temp gauge, I never cared. Just one more thing to play with on long drives, now.
Does higher temps (but not TOO high temps) degrade the oil faster? Maybe the OLM would take it nto account come time for the OCI ipanyway.
Originally Posted By: surfstar
Highway driving with 100* outside temps, my Sportwagen 1.8T is usually around 221 F. Up longer hills I've seen 230, maybe a high of 235. Down those hills it drops to 209.
I added a full engine pan / splash shield from Euro Golfs and the lack of cooling vents upped my temps by 3-5*, from previous. The shield is for an Audi A3, so my lowly Sportwagen shouldn't produce as much heat, so I'm not worried. My temps now are in line with what stock US GTIs seem to report.
I read that under 250 F and you're fine.
Previous to owning a car with an oil temp gauge, I never cared. Just one more thing to play with on long drives, now.
Any idea what coolant temps were for those oil temp readings? Thanks.
Highway driving with 100* outside temps, my Sportwagen 1.8T is usually around 221 F. Up longer hills I've seen 230, maybe a high of 235. Down those hills it drops to 209.
I added a full engine pan / splash shield from Euro Golfs and the lack of cooling vents upped my temps by 3-5*, from previous. The shield is for an Audi A3, so my lowly Sportwagen shouldn't produce as much heat, so I'm not worried. My temps now are in line with what stock US GTIs seem to report.
I read that under 250 F and you're fine.
Previous to owning a car with an oil temp gauge, I never cared. Just one more thing to play with on long drives, now.
Any idea what coolant temps were for those oil temp readings? Thanks.
Originally Posted By: mjoekingz28
Does higher temps (but not TOO high temps) degrade the oil faster? Maybe the OLM would take it nto account come time for the OCI ipanyway.
I'm sure the OLMs have values built in for whats too hot. But I wouldn't think there is anything to say 220 is worse than 215. I could be wrong though.
Does higher temps (but not TOO high temps) degrade the oil faster? Maybe the OLM would take it nto account come time for the OCI ipanyway.
I'm sure the OLMs have values built in for whats too hot. But I wouldn't think there is anything to say 220 is worse than 215. I could be wrong though.
Originally Posted By: horse123
What are both the high and low ends of what you'd consider normal for a standard NA passenger vehicle? Obviously fully warmed up
My car never seems to get above 220F.
Yes, I would agree that 100 C / 212 F seems to be typical for most water-cooled passenger cars.
As others have said, it will take sustained engine load to really push the temps up. Going WOT at the on-ramp will have a negligible impact. When my car is out on the track, however, and is seeing constant WOT, it will hold steady in the 125 C / 260 F area.
What are both the high and low ends of what you'd consider normal for a standard NA passenger vehicle? Obviously fully warmed up
My car never seems to get above 220F.
Yes, I would agree that 100 C / 212 F seems to be typical for most water-cooled passenger cars.
As others have said, it will take sustained engine load to really push the temps up. Going WOT at the on-ramp will have a negligible impact. When my car is out on the track, however, and is seeing constant WOT, it will hold steady in the 125 C / 260 F area.
I Never saw it above 200F even when driving hard. Stock Oil/water heat exchanger. I Keep it near the full mark, tough, checking every week in a car that don't consume oil.
I recently went up the hill so to speak from Needles, Ca. to Barstow the first part of July. The outside temp was 115. My coolant tmp was 230 and the oil temp was not far behind. I was traveling in the center lane barely passing trucks at 60 mph. There were some CA drivers passing me so fast that made it look like I was changing a tire. I have an after market oil temp gage and a Scan Gage that allows me to monitor the coolant temp.
The built in temp gage did not budge from dead center, but then it was only 45 degrees above my normal highway temp. The elevation change is from about 430 to 2700 feet.
Given this typical operation for 90% of the cars on the road, is the common BITOG obsession with NOACK numbers really of much relevance?
Originally Posted By: demarpaint
Any idea what coolant temps were for those oil temp readings? Thanks.
200 F & rock steady, according to the "gauge", which is obviously a dummy gauge.
Any idea what coolant temps were for those oil temp readings? Thanks.
200 F & rock steady, according to the "gauge", which is obviously a dummy gauge.
One point I like to make in threads like these, oil doesn't even reach its specified grade until 212f/100c. With the EPA breathing down the necks of manufacturers engines are running warmer than ever, and all fluids within, to make maximum efficiency.
With the latest specs (either SN or CJ-4) taking higher operating temps into account, its not uncommon to see oil temps approaching 260f under extreme conditions. Its how the systems are designed currently and as long as there aren't any mechanical problems its perfectly normal.
On my current '15 Super Duty 6.7 PowerStroke the trans temp stays at 200f under normal conditions, a temp that was not long ago considered a transmission killer. It is a thermostatically controlled circuit, its where Ford engineers want it to operate and thats good enough for me.
With the latest specs (either SN or CJ-4) taking higher operating temps into account, its not uncommon to see oil temps approaching 260f under extreme conditions. Its how the systems are designed currently and as long as there aren't any mechanical problems its perfectly normal.
On my current '15 Super Duty 6.7 PowerStroke the trans temp stays at 200f under normal conditions, a temp that was not long ago considered a transmission killer. It is a thermostatically controlled circuit, its where Ford engineers want it to operate and thats good enough for me.
Originally Posted By: surfstar
Originally Posted By: demarpaint
Any idea what coolant temps were for those oil temp readings? Thanks.
200 F & rock steady, according to the "gauge", which is obviously a dummy gauge.
Thanks. I'm seeing coolant temps between 195-220F during the recent heatwave. 199-205F on the highway with temps reaching 220F give or take in traffic. The fan is programmed to kick in at 226F, but I run the AC all the time which keeps the fan running all the time. This is a 2016 3.6L Wrangler. Those are normal temps, but this old timer has a hard time wrapping his head around 220F. My "dummy gauge" stays dead smack in the middle from 195-220F. I would imagine oil runs hotter, I guess. I have no provisions to measure oil temps.
Originally Posted By: demarpaint
Any idea what coolant temps were for those oil temp readings? Thanks.
200 F & rock steady, according to the "gauge", which is obviously a dummy gauge.
Thanks. I'm seeing coolant temps between 195-220F during the recent heatwave. 199-205F on the highway with temps reaching 220F give or take in traffic. The fan is programmed to kick in at 226F, but I run the AC all the time which keeps the fan running all the time. This is a 2016 3.6L Wrangler. Those are normal temps, but this old timer has a hard time wrapping his head around 220F. My "dummy gauge" stays dead smack in the middle from 195-220F. I would imagine oil runs hotter, I guess. I have no provisions to measure oil temps.
With ambient temps around 115F the maximum oil temps I have seen is 227F, ATF 196F, and coolant 221F. This is elevations around 1500FT to 6000FT with around 1200 pounds of total payload.
Not a lot different with ambient temps around 40F. Even below freezing the difference is less than 10F for fluid temps.
Not a lot different with ambient temps around 40F. Even below freezing the difference is less than 10F for fluid temps.
Originally Posted By: nascarnation
Given this typical operation for 90% of the cars on the road, is the common BITOG obsession with NOACK numbers really of much relevance?
Some parts of the engine gets to 250C pretty quick, like piston ring pack and head. That's why short tripping kills the oil much quicker than the longer runs. Several, more reiterated static starved oil (just a film to withstand that heat) heat soaking cycles at those parts, gives way more thermal stress per oci. Every time the engine is shut down, a small part of the oil is killed by thermal stress, for lack of replacement (sitting) in some hot places.
Given this typical operation for 90% of the cars on the road, is the common BITOG obsession with NOACK numbers really of much relevance?
Some parts of the engine gets to 250C pretty quick, like piston ring pack and head. That's why short tripping kills the oil much quicker than the longer runs. Several, more reiterated static starved oil (just a film to withstand that heat) heat soaking cycles at those parts, gives way more thermal stress per oci. Every time the engine is shut down, a small part of the oil is killed by thermal stress, for lack of replacement (sitting) in some hot places.
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