Hello,

 

        I was idly scrolling through using the wheel on the steering wheel today in the afternoon.  The oil temperature was 70 degrees plus centigrade. The car had only been driven for a mile, two at the most, was in an urban area and speeds were fairly low, no more than 50 mph. in 6th gear, 2700 rpm. The coolant  gauge was reading 90 degrees centigrade.

 

          I realise that today is not a true test. The car wasnt being driven hard, it was just about  warm as opposed to being really hot and 70 degrees plus isnt representative. I am using Castrol Edge 5w30 long life fully synthetic and have done since buying the car in January 2020. I would have thought that an oil temperature of 100 degrees C or a   bit higher would be about  right for when the car was really hot and was being driven hard at motorway speeds. Is my understanding  correct? I am taking a journey next week where I expect to cover the ground speedily on a dual carriageway road into North Wales and expect to cover 80 plus miles in not much more than an hour. I am also going on a holiday next month to North Yorkshire and some of the roads I will be using permit some definitely  speedy driving if I can put it that way.

 

        I have been told by a friend who also has a Fabia 110  that the oil temperature should never drop below 50 degrees C even in winter. Is that correct with the Castrol Edge 5w30 ? It does seem a high temperature to me when the ambient temp is freezing or less. I realise its impossible to have a rigid "max" and a rigid "min"  but I would appreciate the wisdom of my fellow Briskodians as to some broad variants for the oil temperature.

 

                  Thanks, look forward to reading your  comments and learning more about my car.

9 minutes ago, hetty1 said:

The car had only been driven for a mile, two at the most, was in an urban area and speeds were fairly low, no more than 50 mph. in 6th gear, 2700 rpm. The coolant  gauge was reading 90 degrees centigrade.

You do not say what your engine is, petrol or diesel and what type (110 being a diesel?) but if you were two miles or less into a journey from a ambient temperature engine start there is no way that the water temp will have reached 90°c, the guage will read precisely that over a very wide temperature range.

 

Oil is the engines primary coolant, this is often overlooked, your engine probably has an oil to water heat exchanger, the water cooling system will heat the oil during the warm up period and cool it under heavy load once the engine reaches normal running temperature which will be some while after the guage shows 90°c. The heat exchanger will easily keep the oil above 50°c in arctic conditions once the engine reaches normal running temperature.

 

Any measurements taken after 2 miles or less are meaningless.

It is a tsi as a 3 cylinder 1.4 TDI was not 110ps.

 

First it gets up to an efficient temp.

The efficient oil temperature is around the 92*oC indicated it gets to, and this is around the coolant temp.

When the oil gets hotter into the high 90's, low 100 and a bit the system is trying to get the oil back down to the 90 *oC ish temp. 

 

In the UK even if it gets to minus 15*oC ambient the oil will get to 50*oC indicated in about 10 miles, then keep going up to above 80*oC even if you are running quite slow. 

 

http://briskoda.net/forums/topic/454977-oil-temperature

 

Edited 25 May, 20224 yr by roottoot

My TSI will show 90 C on the temperature gauge between 1 and 2 miles from a cold start.

This is NOT accurate, and when I want to find the correct water temperature I will use OBD11.

 

The oil temperature display on the MFD will only show oil temperature from 50 C and above.

It will display ' - - - ' when the oil temperature is below 50 C.

 

From a cold start the oil will reach 50 C from 2 to 4 miles.

The colder it is outside the longer it takes.

After 12 miles it will be between low 80's C and low 100's C

The hotter it is outside the higher it gets.

 

I find the car engine can keep its heat for a long while after you turn the engine off.

 

1 hour ago, hetty1 said:

look forward to reading your  comments and learning more about my car

 

There are two coolant circuits and two thermostats on this engine.

One circuit is for the Cylinder Head with a thermostat that opens at 87 C.

There is no exhaust manifold and the Turbo is mounted directly on to the Cylinder Head.

The exhaust ports/pipes in the Cylinder Head are surrounded by coolant waterways.

This circuit supplies the heat / hot water for the cabin. ( very quickly )

There is a coolant temperature sensor on the back of the cylinder head, G62.

 

The second circuit cools the Cylinder Block and has a thermostat that opens at 105 C.

There are two coolant pumps on this engine.

One mechanical which is in the ( 2 ) thermostat housing and is driven by a belt from the exhaust camshaft.

This is on the gearbox side of the engine at the top.

 

The second coolant pump is electrical and is on the front of the engine. V188.

( Was this the one that was changed on your car Hetty1? )

This can / will run when the engine is turned off and supplies coolant to the Turbo at the same time.

Also on the front of the engine there is both an oil cooler and a charge air cooler that uses the coolant.

So there is no air to air intercooler behind the front grill.

 

There are also two coolant radiators behind the front grill.

The lower one for the electrical coolant pump.

The higher one for the coolant coming from ( 2 ) thermostat housing.

This also has a coolant temperature sensor on the return flow. G83.

 

THT

 

Thanks, AG Falco

 

 

Mine runs at 90°C for both oil and water

@brian245  Really?   

The Coolant temp gauge might rise to 90 degrees indicated and stay there but that is not accurate.

 

When driving when the weather is hotter, your speed rises, the road gets steeper and you have people and stuff in the car does the 'indicated' oil temperature not go higher than in the 90's?

Something is very odd if it does not.

Edited 26 May, 20224 yr by roottoot

On 25/05/2022 at 19:31, hetty1 said:

no more than 50 mph. in 6th gear, 2700 rpm.

Are these figures correct?

 

At 50 mph in top my engine will be lower than 2000 rpm.

 

Found this:-

Top speed/rpm at 70mph

114mph/2,800rpm

 

Thanks, AG Falco