[ta man]

Originally Posted by Tom Vaught

Sounds like you have no issues at all.
The oil will not start to break down (conventional oil, not synthetic) until 240 degrees F.
Oil temp at 210 around town and 190 on the road is great. Looks like you are in a great spot for oil cooling and oil durability.

If the engine was a State Police Cruiser and required to run max speed for 15 miles to get to a bad accident then the continous high speed load would necessitate a proper oil cooler and other mods. Most street cars never see over 5 seconds of WOT unless playing games at night time in Oklahoma.

Tom V.

It will be interesting how the oil temps react to a 1/4 mile run.

[Tom Vaught]

Matt, can't even imagine a 40 mile run.

I was doing testing on Mrs. Orcutt's Driveway in California quite a few years ago for a (CARB Required) AERO Horsepower Number. So we asked a team of CHIPs to watch over us and keep the rubber-neckers away from the testing. Link to the location and driveway: http://www.caranddriver.com/features...cutts-driveway

http://virtualglobetrotting.com/map/...y/view/google/

So I am sitting in the Passenger Seat along with the shotgun, the radio, and a bunch of other stuff outfitted in those cars, as you well know.
So we hear over the radio that a child was reported "kidnapped" at a airport about 20 miles away so CHIP units to respond immediately. So I say "let me out". The Officer says "no time for that" so off we go at warp speed. As fast as that CHIPS Mustang would travel on US-40 headed for Barstow-Dagget Airport. Serious ride for 20+ miles.
High MPH speedometer and it was topped out for those 20 miles. I kept thinking I hope these are not those POS F/S recall Tires at the time.

Thanks for your efforts protecting your fellow citizens.

Tom V.

[Tom Vaught]

Matt is smart, even at 90 mph for 26 minutes is a very long time on a true street vehicle.

The manufacturers test on the dyno for much longer periods of time at max rpm plus 10% for a durability test lasting hours but the human in the car doing the same high speed long duration deal is quite outstanding. Bonneville is only 7 miles long.

Tom V.

[PontiacMatt72]

Thanks fellas.

Of that 40 mile run, half was down I-71 (I cover an area between Cincinnati and Louisville) running around 120-130mph (which is the governed speed on our AWD Chargers). The other ~20 miles were on 2 lane highways with few "passing zones". (Curvy).

In a coworkers '15 RWD Charger, I took it all the way past 150mph one time. The car was stable, but with a basic shoulder/lap belt and no roll cage (and a heavily deer-populated area) It was more than I wanted.

Glad to hear the oil and engine temps are satisfactory, ta man. You're endeavor makes me feel comfortable foregoing an oil cooler on my build. (May copy tho and utilize an oil temp gauge).

[Elarson]

150 mph on a public highway has waaaay more pucker factor than going 230 mph on a dragstrip. Wow, that's bad*ss. I'll have to behave myself on my next trip to Louisville. 😏

Eric

[PontiacMatt72]

Just some info for comparison.

Last night I observed oil and coolant temps on the '16 Charger in response to a hot call. Approximately 10-12 miles down interstate at ~120-130mph, then 3-4 miles through town and 2 lane roads, with periodic heavy acceleration (4K-6k rpm range most of the time)

Coolant temp peaked at 212.
Oil temp peaked at 244.

Under normal driving or idle condition, coolant is at 205-210 and oil is at 210-220.

I'm fairly confident the engine is filled with conventional oil. Currently at 26k miles. Car has heavy duty cooling system, but not sure about oil cooler.

[Tom Vaught]

Do not know what your Chargers recommend for Oil type and weight but when you reached about 240 degrees on the oil temp you were now STARTING to degrade the oil life based on your above post with the pan filled with conventional oil.
A peak temp of 244 degrees says that the oil cooler is trying to do its best to stay around that temperature.
So I see no real issues if your department has normal oil changes on pursuit vehicles around 3K vs the typical manufacturers 5K deal.
The rest of the vehicles can stay at the 5-6K oil change recommended by the Factory.

Tom V.

[PontiacMatt72]

I mentioned peak was 244, majority of the time during the the hard driving it was staying right around 240, so I'd say you're right about a cooling system trying to control the oil temp.

[Tom Vaught]

I have always been told by the oil experts in our building (from BP, etc and they do the job for a living), that that temp number is pretty good for many oils and an efficient oil cooler. LEO type vehicles are right up there with military SPEC-OPS desert vehicles and Baja type vehicles on continuous high load/high oil temp engines.

Tom V.

[Skip Fix]

As far as simple oil coolers my Vortec Chevy truck and I think some of the Vettes also had one that was sandwiched between the oil filter and has lines running to the radiator.

[Tom Vaught]

Sandwich type coolers are very common on truck applications.
Sometimes necessary on LEO type vehicles.
Ford actually made a 'Extension mount that moved the oil filter/cooler forward about 10" to allow packaging the sandwich mount cooler. Made the water lines shorter too.
Cast in oil passages were 5/8" diameter.

Tom V.