Temps - these ok?

[BrianElloy]

After 2 hours at ~110km/h towing a 1.6T camper trailer on 50% flat 50% hills (I’d estimate about 5% grade on average). Ambient temp was approx 25 deg C.

Thoughts?

https://uploads.tapatalk-cdn.com/20190426/09b25e6e64bd36c87e4c061882b7e7c5.jpg

[DiscoJeffster]

I saw 132 degree oil temp at 25 ambient towing a 1 tonne camper at ~110kph on dash (~104 real), so yours is much better.
I’ve recent switched to Penrite “extra ten” 5W-40 oil and wonder if that’s a factor in the increased oil temp. It settled to around 122 degrees average. My coolant was in the 90s most of the time.

[Milton477]

Ice cold.

I tow 2.8T at 100km/h & see coolant at 100 to 108 deg & oil at 135 sometimes.

[BradC]

At 100 with a 1.6t block of flats on the back I see oil > 120 and coolant > 110 often on steep grades. On the flat in 5th it settles at oil 106, coolant 95-96 and in 6th I see oil 102 and coolant 98-100. I've never really watched the consumption difference between 5th and 6th, so I tend to sit in 5th with the cruise control on.

The oil temp is primarily friction heat while the coolant is cylinder/head temperature. EGT is about even in both gears.

All well within normal parameters anyway.

[Dagilmo]

Just been Perth to Esperance and back. Towing our 1.5 camper. Coolant low 90s most of the time peaking to 100 on longer climbs.

[BrianElloy]

I’m not an expert on temps but the gearbox temp caught my eye ...

[DiscoJeffster]

I’m not an expert on temps but the gearbox temp caught my eye ...

Can’t see that in your picture. My gearbox sat around 80-90 degrees C most of the time to which I’m more than happy with.

[Jueylea]

Your temps are fine when compared to mine. I'm trying to hunt down the cause.

140+ for engine oil when under loaded conditions at 100kph- eg hill or headwind towing around 1.8t camper
coolant temps remain around the 90C. This is at ambient temp pf less than 20C
Once 140C is reached performance is restricted but not sent into limp mode. No warnings, no increase in temp gauge on car and no codes raised.

Seems to have only have become an issue since installing a bullbar, winch and lights.

With coolant temps running fine could this be a case of lack of airflow over motor? There is supposably a standard fitment engine oil cooler on top of motor beneath the oil filter.

If I sit on 90kph I can keep the oil temp around 135C.

[BradC]

If I sit on 90kph I can keep the oil temp around 135C.

What's it like when you're not towing?
Once thoroughly warmed up, my oil and coolant track pretty closely when tooling around town (or at 110 on the freeway).

There is an oil cooler in the V under the oil filter. The coolant spiggot on that goes into the rear socket in the coolant outlet. Wonder if the cooler is obstructed in some way?

[Jueylea]

Not towing and it will sit on 125 or so.

Travelling over the last few days I have tried without the spotlights, without the winch (with the lights)- both no improvement.
Today without the winch along with the front number plate removed and it seems to have improved, sitting on 100kph and 135C or less was the norm. A couple of final long pulls up hills did see temps up to the 140 at the very top (coolant also increased to 104). If I wasn't monitoring I would never have known as the down hills on the other sides reduced the temps while not having to give much throttle. It does take a while to drop though as there appears to certainly be some heat soak in the engine.

This makes me curious as to the airflow, the majority of the radiator is actually fed from the lower section of the bar, it's actually shrouded and encased somewhat to separate it from what enters through the grill. Removing the number plate would have done little more than change pressures and air movement behind the bar as directly the channel where the number plate sits is no radiator.

It is in for a service as soon as it can be booked in and I will be having the plastic coolant housing that cracks replaced at this time (preventative). Will be asking to ensure a complete flush and obviously fresh coolant. In the meantime am pondering over the whole airflow thing. Will load the winch back in and try again still without the number plate.....

[DiscoJeffster]

Your temps are fine when compared to mine. I'm trying to hunt down the cause.

140+ for engine oil when under loaded conditions at 100kph-.

What oil and spec are you running - do you know exactly? Oil viscosity can have an impact on oil running temps as it makes the engine work harder to pump it around. Interestingly while higher viscosity can provide additional protection, it can have the opposite effect if it’s causing the engine to be hotter and work harder.

I suspect your oil temp has nothing to do with the bull bar as I recall your coolant temps are fine.

[Jueylea]

What oil and spec are you running - do you know exactly? Oil viscosity can have an impact on oil running temps as it makes the engine work harder to pump it around. Interestingly while higher viscosity can provide additional protection, it can have the opposite effect if it’s causing the engine to be hotter and work harder.

I suspect your oil temp has nothing to do with the bull bar as I recall your coolant temps are fine.


Penrite Enviro+ C1 Diesel 5W-30
Coolant temps to me are fine, gauge doesn't move and sits around 90C majority of the time.

I am hoping for nothing sinister.....

[Milton477]

The hottest I have seen mine. Pulling hard at the time. No restrictions on performance or aircon observed.

150409

[BradC]

Penrite Enviro+ C1 Diesel 5W-30
Coolant temps to me are fine, gauge doesn't move and sits around 90C majority of the time.

I am hoping for nothing sinister.....

I use Enviro+ 5W-40. While you have the coolant outlet off, it might be worth a reverse flush on the oil cooler. I don't know if the cooler has a thermostat. That'd be my first port of call.

Luckily once you have the thing pulled down far enough to get to the coolant outlet, the oil cooler is literally right there under it.

[Jueylea]

I'll let my Indy take a look into the thermistat Brad.
Milto, given your coolant temp I'm thinking your engine oil temp is under control. Say 20C variant. I've seen almost 50C variant which has me wondering about the oil cooler....

[jonesy63]

What are you reading the temperatures with? Is it an IID Tool or Nanocom Evo - or an eBay "you-beaut" reader?

[DiscoJeffster]

What are you reading the temperatures with? Is it an IID Tool or Nanocom Evo - or an eBay "you-beaut" reader?

That’s an IID tool view

[Jueylea]

What are you reading the temperatures with? Is it an IID Tool or Nanocom Evo - or an eBay "you-beaut" reader?
I'm reading with a Rovacom IQ

[jonesy63]

That’s an IID tool view

He hasn't posted any screenshots!

[DiscoJeffster]

He hasn't posted any screenshots!

Well you didn’t quote the post you were specifically querying dude so I presumed you were asking about the original picture, not the preceding post, so next time, maybe quote the specific quote you’re asking about?

[emoji849][emoji849][emoji849][emoji849][emoji849]

[Jueylea]

As I sort of hi jacked thread thought best to finish with where I'm now at.
Oil cooler replaced (along with coolant), same rd same weather, same speed. Oil temp 135 before and today 115. Oil temp sits around 20c more than water until load is removed after which oil takes a little longer to cool than the water.
Appears my issue is fixed however will only load the trailer up again beginning June. Pretty confident though.
Interestingly hard to say if there is any perceivable issues with the old cooler. Water flows through it, and can blow air. Can feel restriction but didn't see the new before going in to compare.
Thanks for people's inputs and the original post which prompted me to sign up after 12 months to be able to post

[CanadianRyan]

Not towing and it will sit on 125 or so.

Travelling over the last few days I have tried without the spotlights, without the winch (with the lights)- both no improvement.
Today without the winch along with the front number plate removed and it seems to have improved, sitting on 100kph and 135C or less was the norm. A couple of final long pulls up hills did see temps up to the 140 at the very top (coolant also increased to 104). If I wasn't monitoring I would never have known as the down hills on the other sides reduced the temps while not having to give much throttle. It does take a while to drop though as there appears to certainly be some heat soak in the engine.

This makes me curious as to the airflow, the majority of the radiator is actually fed from the lower section of the bar, it's actually shrouded and encased somewhat to separate it from what enters through the grill. Removing the number plate would have done little more than change pressures and air movement behind the bar as directly the channel where the number plate sits is no radiator.

It is in for a service as soon as it can be booked in and I will be having the plastic coolant housing that cracks replaced at this time (preventative). Will be asking to ensure a complete flush and obviously fresh coolant. In the meantime am pondering over the whole airflow thing. Will load the winch back in and try again still without the number plate.....


Has anyone ever fitted a secondary push fan to the front of the rad? I also run a bit hot towing and have a bullbar, winch and lights fitted. I wonder if a decent push fan would account for the loss of ram air.