Oil temps !!??
Discussion
ARAF said:
stigmundfreud said:
dependant on which car I take to the office tomorrow if I remember I'll do a check to see how the two correlate.
How will you tell? We all have oil temp gauges, but in my experience, they're not to be believed. Typically its a fairly standard calc oil temp based on a few other inputs, its relatively stndard and accurate
stigmundfreud said:
ARAF said:
stigmundfreud said:
dependant on which car I take to the office tomorrow if I remember I'll do a check to see how the two correlate.
How will you tell? We all have oil temp gauges, but in my experience, they're not to be believed. Typically its a fairly standard calc oil temp based on a few other inputs, its relatively stndard and accurate
Just to add a bit more to the puzzle, Monaros don't seem to have the problem, like VXR8s do. It's certainly not something that has been reported on here, and there's a few Monaros running quite a bit of power on here.
stigmundfreud said:
what problems are reported on the vxr8s?
High oil temps on track. It wasn't such a problem at Spa, so I can only think that the long high-speed straights there do help the cooling - or I've always short-shifted there. All other tracks have been a problem,As I've said above, I've only been able to keep the temps in check after 5-10 minutes by keeping the revs down, and then you can stabilize the oil temp at around 125-130 deg C.
stigmundfreud said:
what problems are reported on the vxr8s?
Oil temps reported by the stock gauge . IF they are anywhere near true then IMO there is a problem. On routine driving they sit at 110*c..already higher than I would like, after 10min spirited motorway driving I was up at 130*c. once again IF the stock gauge is relatively accurate then that is a major issue for me. Oil temps of 120+ will wreck even the best oils in not time.
So I am fitting a AEM oil temp gauge using a M14x1.5 sump plug adapter with a 1/8th NPT female threaded insert. I can then monitor and cross reference what the stock gauge reads VS the AEM. As before IF the stock gauge is accurate to a degree then I shall be fitting a nice beefy oil cooler with a 90* stat. If the stock gauge is miles out and temps remain below a REAL 110*c I will leave things alone.
stigmundfreud said:
I wouldnt worry too much off the stock gauge, its calculated so its easy for a variable to affect it.
I dont have efi installed but look for the pid and I am certain it was a calc one so you can see the variables used
That was my thought, with the VXR8, as I measured the temp at the end of the dipstick with an IR thermometer, and it was 35 deg C colder than the gauge.I dont have efi installed but look for the pid and I am certain it was a calc one so you can see the variables used
However, as the same thing happened with the Ute, I invested in some temp strips, and even short-shifting, I have recorded temps of 127 deg C at Zandvoort, in the summer, from the side of the oil filter.
Maybe the lack of oil, compared to the Monaro is to blame?
not a scooby I cannot recall the differences between the engines. Oil cooler (presume they are fitted, sure there was a big hoo haa on the ls3's getting them), prehaps gearing, perhaps your driving style. Perhaps you were in 3rd not 5th in the R8 (ooops!)
Is oil capacity different? maybe the 2s/3s run hotter but 137 if accurate isnt exactly toasted
Is oil capacity different? maybe the 2s/3s run hotter but 137 if accurate isnt exactly toasted
stigmundfreud said:
not a scooby I cannot recall the differences between the engines. Oil cooler (presume they are fitted, sure there was a big hoo haa on the ls3's getting them), prehaps gearing, perhaps your driving style. Perhaps you were in 3rd not 5th in the R8 (ooops!)
Is oil capacity different? maybe the 2s/3s run hotter but 137 if accurate isnt exactly toasted
137degC for engine oil IS toasted IMO. If you've seen that high, I'd be changing itIs oil capacity different? maybe the 2s/3s run hotter but 137 if accurate isnt exactly toasted
Edited by stevieturbo on Monday 3rd November 00:33
stigmundfreud said:
Well its a good 20 over what you would want but I doubt it would degrade significantly. Maybe he is getting old and it was 137f?
I'd rather trust a proper temp test than a strip test
137degF would be very very cold, less than 60degCI'd rather trust a proper temp test than a strip test
I've never used the strips before, so dont know how they might be affected by outside influences, ie exhaust etc
But they do seem to be a widely used item in industry and with engines etc so they must be a fairly reliable item
And if stuck on an oil filter, which would probably provide a coolest reading rather than warmest, it should be a fairly good indicator of temperatures seen.
But you dont know how long they were at that temperature. Modern oils are very good, but you wouldnt deliberately run the engine coolant beyond a certain temperature for very long without risking damage, the same will apply with oil.
Damage may occur over a long period, or it could occur over a few seconds leading to failure. But if you know temps are getting that high, some sort of preventative action would be wise. Engine's arent cheap !
Although I dont think any failures seen so far on the forum or even any online have been attributed to excessive oil temperatures. So that's some peace of mind. Sometimes ignorance is bliss in the first place lol
Most if not all engines seem to die either through improper build or tuning rather than overheating or oil temp problems.
ARAF said:
That was my thought, with the VXR8, as I measured the temp at the end of the dipstick with an IR thermometer, and it was 35 deg C colder than the gauge.
However, as the same thing happened with the Ute, I invested in some temp strips, and even short-shifting, I have recorded temps of 127 deg C at Zandvoort, in the summer, from the side of the oil filter.
Maybe the lack of oil, compared to the Monaro is to blame?
Maybe the lack of the oil moving in the Monaro is the key. its all kept cool in the sump no where near the pump on a hard thrash. its kept cool in the sump!!However, as the same thing happened with the Ute, I invested in some temp strips, and even short-shifting, I have recorded temps of 127 deg C at Zandvoort, in the summer, from the side of the oil filter.
Maybe the lack of oil, compared to the Monaro is to blame?
My old Monaro used to suffer excessive heat when on the Nurburgring and the VXR8 also gets hot when driven hard. In both instances yr keeping the engine above 4500rpm all the time so not really an issue on the road as it's hard to do that.
I'm still going to fit an oil cooler as if nothing else it increases the total system capacity which will help a multitude of things.
I'm still going to fit an oil cooler as if nothing else it increases the total system capacity which will help a multitude of things.
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