Ok, this morning did the test with different conditions. Air temp -17C, 20 min Webasto pre-heating and heater stayed on while driving. First 10 min of driving was 40 km/h without accelerations or stops. So temperature clearly was not going up as quickly as driving in city with higher revs. 90 degrees was reached after 12 minutes (I switched on Webasto heater at about 70 degrees). 

 

By the way - in any of my cars I did not notice fuel consumption differences between summer and winter, because:

 

- average speed is lower in winter

- accelerations are much softer in winter

- air conditioning is off in winter

 

A 1.6CR will likely return 50-55mpg @ 70mph

 

All these magic figures are lab figures, no car meets em, mine is 36mpg urban 28 reality, most 2.0 CR DSG Superbs will return 32mpg on the urban cycle, you have to ignore the we want to sell it BS.

 

Check out my posts here ref fuel consumption, I think my posts were 49 & 61. Before I had my Superb Greenline I had a Passat CC 2.0 140 DSG and that returned a true 52mpg, had it for about 120k miles so this was not a 'one off' figure, but based on the whole three years I had it. It really does depend how and where you drive it. http://www.briskoda.net/forums/topic/316901-whats-best-mpg-youve-had/

 

Also read this, just goes to show what the 1.6TDI engine is really capable of given the ideal conditions http://www.volkswagen.co.uk/about-us/news/259

 

Back to the warm up time, this morning my Greenline took almost 10 miles to reach 90 degrees, a gentle mixture of 30, 40, 50 and 60mph roads, flat to downhill, outside temperature shown as between 3 and 7 degrees.

Edited 7 January, 201511 yr by cnc

Check out my posts here ref fuel consumption, I think my posts were 49 & 61. Before I had my Superb Greenline I had a Passat CC 2.0 140 DSG and that returned a true 52mpg, had it for about 120k miles so this was not a 'one off' figure, but based on the whole three years I had it. It really does depend how and where you drive it. http://www.briskoda.net/forums/topic/316901-whats-best-mpg-youve-had/

 

Also read this, just goes to show what the 1.6TDI engine is really capable of given the ideal conditions http://www.volkswagen.co.uk/about-us/news/259

 

Back to the warm up time, this morning my Greenline took almost 10 miles to reach 90 degrees, a gentle mixture of 30, 40, 50 and 60mph roads, flat to downhill, outside temperature shown as between 3 and 7 degrees.

 

 

 

I know with a manual Octavia 1.6 the 80/20 urban to xurban is just under 50mpg, in a Rapid/Toledo you can get to 60mpg in the city, the Superb is a heavier lump so there has to be a trade off somewhere that means it can't match the other 3 I mentioned,

 

There is a bit of regional to add in as well, one man's urban won't be the same as anothers, due to local conditions to me you can safely say the figures I quoted are around the worst anyone will see, I just don't want ppl rushing in to get a non faulty car messed about with because their London ride only returned half what Ted Rattleshaw the retired vicar living in John O' Groats got nipping down to the local post office 50 miles away lol.

Just coming back to the original post, I've been experimenting with time taken for the water temp to hit 90. I've found that in my car this is heavily influenced by whether you are running the front demister (and for how long), and to a much lesser extent is also influenced by the temperature you set the climate control at.

If I drive with the front demister on permanently, it takes 20 mins for the water to hit 90. If I drive with no demister and with climate set to 18C, then it hits 90 in 9 mins. Ambient temp is approx 5C.

It makes sense I suppose: if the demister is drawing all of the heat away from the engine, then it will obviously take more time for the engine and water to get up to normal operating temperature.

Edited 15 January, 201511 yr by JakeBlade

HoneyMonster that looks really smart, had a look on superskoda could not see it. Do you have link? The site says it only has pre fl, and I know yours is the fl Skoda.

Thanks in advance

Just coming back to the original post, I've been experimenting with time taken for the water temp to hit 90. I've found that in my car this is heavily influenced by whether you are running the front demister (and for how long), and to a much lesser extent is also influenced by the temperature you set the climate control at.

If I drive with the front demister on permanently, it takes 20 mins for the water to hit 90. If I drive with no demister and with climate set to 18C, then it hits 90 in 9 mins. Ambient temp is approx 5C.

It makes sense I suppose: if the demister is drawing all of the heat away from the engine, then it will obviously take more time for the engine and water to get up to normal operating temperature.

 

 

Perfect sense,

Just coming back to the original post, I've been experimenting with time taken for the water temp to hit 90. I've found that in my car this is heavily influenced by whether you are running the front demister (and for how long), and to a much lesser extent is also influenced by the temperature you set the climate control at.

If I drive with the front demister on permanently, it takes 20 mins for the water to hit 90. If I drive with no demister and with climate set to 18C, then it hits 90 in 9 mins. Ambient temp is approx 5C.

It makes sense I suppose: if the demister is drawing all of the heat away from the engine, then it will obviously take more time for the engine and water to get up to normal operating temperature.

 

This also might be useful in crisis situations when engine is overheating and there is no possibility to stop. Then you have to put interior heating to the max and it helps to put coolant temperature down. 

This also might be useful in crisis situations when engine is overheating and there is no possibility to stop. Then you have to put interior heating to the max and it helps to put coolant temperature down. 

 

.... as indeed it did in my 1071 Mini Cooper back in 1979... what a pain in the ar$e it was having the bloody heater on full blast in the middle of summer, but I was so broke I couldn't afford a new themostat!

1 celsius outside. No webesto activated. First 2km 60km/h, 2 redlights, next 3km 110km/h. All in all the car hit 90celsius in 6min, after 5km.

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Apart from unusually low water temperature, how much longer (time or distance) does it take for the oil temperature to reach either the normal running temn't know perature, or the 50 degree

 point which is the lowest figure which can be displayed?

 

(If you don't know how to find the oil temp. it's one of the MFD options on your maxidot.)

 

DC

• Had a most unusual experience yesterday.
• Drove 60 miles to Brecon for lunch at an average speed of 50 - 60 mph. The outside temperature was 3⁰C to 1⁰C dependent upon altitude.
• The average mpg was lower than normal, water temperature 90⁰C but the oil temperature was only 83⁰C.
• The return journey, later in the day, was driven in a similar manner but with an appreciable increase in mpg.
• The return journey had outside temperatures of 1.5⁰C to -1.5⁰C.
• Once again the water temperature was 90⁰C but the oil temperature varied between 86⁰ and 106⁰C.
• It appears the colder the outside temperature the hotter the oil temperature.

Any explanation or thoughts greatly appreciated.

 

Shanco

Edited 20 January, 201511 yr by Shanco

One direction was uphill, the other downhill!?

 

• Had a most unusual experience yesterday.
• Drove 60 miles to Brecon for lunch at an average speed of 50 - 60 mph. The outside temperature was 3⁰C to 1⁰C dependent upon altitude.
• The average mpg was lower than normal, water temperature 90⁰C but the oil temperature was only 83⁰C.
• The return journey, later in the day, was driven in a similar manner but with an appreciable increase in mpg.
• The return journey had outside temperatures of 1.5⁰C to -1.5⁰C.
• Once again the water temperature was 90⁰C but the oil temperature varied between 86⁰ and 106⁰C.
• It appears the colder the outside temperature the hotter the oil temperature.

Any explanation or thoughts greatly appreciated.

 

Shanco

 

 

 

Any engine that runs cold will use more fuel, any engine that runs over hot will use more fuel, it's how it si, choke or over expanded rings in the cyls.

I did a little experiment the other night.

 

I always turn off the climate control before turning the engine off and then hit Auto after the engine has started (old habit, don't ask!).

 

The other night leaving work I forgot to hit Auto.

 

At a junction the engine temp was somewhere between 0 and 90 degree's so not yet up to operating temperature. The outside ambiente temperature was close to freezing. RPM at idle was well below 1,000 RPM.

 

I suddently realised I was cold inside the car and hit the Auto button turning on the heating.

 

I was still stationary at the junction so was able to witness the RPM ramp up to 1,000 RPM at the exact moment I turned on the climate control.

 

This would suggest to me that the purpose of this is to try to generate more heat for the interior?

Edited 21 January, 201511 yr by silver1011

 

• Had a most unusual experience yesterday.
• Drove 60 miles to Brecon for lunch at an average speed of 50 - 60 mph. The outside temperature was 3⁰C to 1⁰C dependent upon altitude.
• The average mpg was lower than normal, water temperature 90⁰C but the oil temperature was only 83⁰C.
• The return journey, later in the day, was driven in a similar manner but with an appreciable increase in mpg.
• The return journey had outside temperatures of 1.5⁰C to -1.5⁰C.
• Once again the water temperature was 90⁰C but the oil temperature varied between 86⁰ and 106⁰C.
• It appears the colder the outside temperature the hotter the oil temperature.

Any explanation or thoughts greatly appreciated.

 

Shanco

 

 

 

One direction was uphill, the other downhill!?

If the return jouney from Brecon was south on the A470, it's a steady climb from about 490 feet above sea level to about 1,690 feet above sea level at Storey Arms in the space of a few miles, so that'll increase the oil temperature.  Coming the other way going north, the climb is more gentle to Storey Arms and the engine isn't working so hard.

 

On a similar vein, I notice the difference in fuel consumption if I go from Brecon to Abergavenny, which is a distance of 20 miles and Abergavenny is lower than Brecon.  I've had a best on the MFD going to Abergavenny of 64mpg, but only 56mpg in the other direction.

Hi Penpusher,

Next time I visit Brecon I'll approach from a route via Abercrave, Cray and Sennybridge to see what happens.

Shanco

Hi Shanco

 

I guess you're from the Swansea area if Abercrave is an alternative route?  If so, you had more of a climb going home than just to Storey Arms as I assume you went past Hirwaun, so there's another steep climb after the reservoir?

 

The figures in my last post are a little over, as I could only find them in metres at the time.  At Storey Arms, you're about 1,450 feet above sea level and not 1,690 feet.

 

I apologise for going completely OT, but another route to really put your car to the test is over the Rhigos Mountain Road to Treorchy and then on Cymmer and Port Talbot.  You need plenty of time, of course, so it's not often possible.  And don't forget to take some bread to feed the sheep!