95539 Km (238,3 in the Trip meter) so 238 Km distance which i could push things a bit more in Mountain Roads till 4100 rpm

the Total consumption is 15,9 litres which is 6,69 ltr/ 100 Km Average

and the Ø indication in the TC-6 agrees.

Next stop was 95619 Km (318,7 in the Trip meter) so 318 Km distance

the Total consumption was 21,2 litres which is 6,66 ltr/ 100 Km Average, both very good results !

As you can see i had problem taking photos,the sun's angle didn't help at all-was a hot day and i had not enough patience.

One more test and the Summer is out,things went quite well far better than i was hoping.

6.66 litres per 100 km is 42.8 miles per UK gallon, very good.

Average 5.94 ltr/Km or 47.56 British MPG.

On 23/07/2025 at 11:44, D.FYLAKTOS said:

which is Average 6,06 ltr/Km or 46.61 British MPG (Excellent result) 🤩

These are my Summer records for a trip.

In the future i will do a Winter test to see the differences.

Next stop was 95694 Km (393,5 in the Trip meter) so 393 Km distance, was in Mountain Route were a moved faster than normal although i had luggages inside.

The Total consumption was 25,4 litres which is 6,46 ltr/ 100 Km Average or 43.73 British MPG, very good result in a hot Summer day.

The Ø indication in the TC-6 agrees.

I have another one final MPG test plus a photo of the maximum coolant temperature (compared to the indication of the console gauge) till the end of the whole test for Summer.

On 03/08/2025 at 22:46, D.FYLAKTOS said:

4100 rpm

you are going to cook the engine

Edited 6 August, 20256 Aug by Thefeliciahacker

1991 Škoda 135 Rapid instruments, note green and red sections 4,100 well before start of red section being graduated in, would the 2000 Felicia engine be much more fragile than this one.

Edited 7 August, 20257 Aug by nta16
typo

19 hours ago, Thefeliciahacker said:

you are going to cook the engine

16 hours ago, nta16 said:

1991 Škoda 135 Rapid instruments, note green and red sections 4,100 well before start of red section being graduated in, would the 2000 Felicia engine be much more fragile than this one.

The green section is the most economical area (Felicia has extended it to 3500RPM), keeping the engine beyond leads to higher consumption, but it can also overheat the engine oil, since these engines lack an oil cooler. But it will survive accelerations all the way to the red area, if they are not frequent and the engine is at correct temp.

Edited 7 August, 20257 Aug by Papez

I don't think the engines were that bad that they needed an oil cooler for normal road use and I don't think anyone meant constant high revs but if you want to get up a mountain pass you don't be lugging the engine either. In the 1980s/90s for normal road use cars oil coolers were for exotics or those that might be pretending the cars needed them. Caravan and boats were towed by cars without oil coolers, probably not these Škoda. Much, much smaller engined cars were also going over mountain passes many decades before and engine oils got better in the 1960s/70s and again 90s/2000 and better still towards 2020s.

I didn't always drive my 120LS, 130LS Estelles and 130 Rapid economically, though I'd not drive like in that video, the drive is about maintaining momentum, braking and slowing less, maintain the correct speed to manoeuvre safely at pace, none of my cars ever overheated the oils of the mid-80s to early 90s and these weren't special oils just those that the Škoda Dealerships of the time used.

That was a UK perspective anyway.

Edited 9 August, 20259 Aug by nta16
typo

6 hours ago, nta16 said:

In the 1980s/90s for normal road use cars oil coolers were for exotics or those that might be pretending the cars needed them

Your car has an oil cooler, too - on Estelle's, the alloy oil pan served as a replacement for an actual oil cooler that was used in 110 and early 120LS models. It's primitive, but it serves the purpose. It's quite common on 90's cars as well, at least the oil/coolant type - even diesel Felicia has it.

6 hours ago, nta16 said:

Caravan and boats were towed by cars without oil coolers,

Funny when you talk about this - I was reading through Favorit manual, looking for the line that it shouldn't be ran above 3500 that I remember - I didn't find it, but towing part mentioned that it shouldn't drive faster than 80km/h during towing - even if trailer and legislation allows it. It also mentions shifting up as soon as possible due to cooling limitations.

6 hours ago, nta16 said:

none of my cars ever overheated the oils

Do you have an oil thermometer? Oil can go well over 100 degrees in high load conditions, like highway driving, without cooling. I managed to overheat my Felicia's oil once, after driving 20min at 140km/h (around 4k RPM) - the oil pressure light started to flash, because the oil became too thin.

4 hours ago, Papez said:

Oil can go well over 100 degrees in high load conditions, like highway driving, without cooling. I managed to overheat my Felicia's oil once, after driving 20min at 140km/h (around 4k RPM) - the oil pressure light started to flash, because the oil became too thin.

I one up that, felicia can easily overheat its oil even at moderate rpm. Thats why I opt for a 50. 120C+ are easily achivable sadly.

As I've said many times the felicia engine is a reverse flow 8v unit. They are not meant to flow at high rpm. Peak torque is at 2600rpm.

These engines are very elastic, their best region is from 1500rpm to 2200 rpm, with their ideal region being 1800-2000rpm, to me If I were to drive without seeing the tacho, I would be driving the car at around 2k. This is exactly their sweetspot.

They are not noisy, you have all of the torque under your right foot, you have the best fuel economy, you keep the oil cool, you have the lowest parasitic losses, you have adequate coolant flow.

Btw the main oil gallery runs very close to the bottom of the coolant jacket to provide some heat exhange and the felicia carries a LOT of oil for its displacement. But yet again it can overheat its oil.

As youve noticed in my video, the felly is joy to early shift it. It really accepts that style of driving. Actually, tbh its a very easy car to drive as long as you know how to treat it. The throttle modulation at low rpm is excellent. I can easily set off at 1000rpm giving it throttle as the clutch is let out, you have crazy good control.

The only problem is that it tends to buck at low rpm if you let off, as ALL OHV cars tend to do.

Ofcourse you have to respect it.

BTW Today with the stupid grande punto I almost hit some pedestrians (like not really but still it gave them and me a good ass scare), because it actually momentarily locked its REAR wheels before the abs kicked in on the rear. Stupid super self-energizing drums, it crabbed on me, causing me to have to counter steer and let off pressure. These brakes are made for maximum brake force when going straight, and then you have to rely on the system, a system pathetically slow. Not made for proper human control, very grabby to reduce brake effort.

Maybe you have to trust the ABS, but damn, locking its rear wheels would make any proper driver instinctively let off. Keep in mind I was not going more than 40kmh on a VERY slight downhill left turn where the pedestrian crossing is hidden until the last 10m. Didnt use more than 30% of the actual brake force before it locked...And the tires are a year old....

Edited 8 August, 20258 Aug by Thefeliciahacker

4 hours ago, Papez said:

Your car has an oil cooler, too - on Estelle's, the alloy oil pan served as a replacement for an actual oil cooler that was used in 110 and early 120LS models. It's primitive, but it serves the purpose. It's quite common on 90's cars as well, at least the oil/coolant type - even diesel Felicia has it.

Interesting, was the alloy finned after I posted I thought about the oil pan but couldn't remember, any oil pan is a type of oil cooler really. What did this achieve in colder countries or colder UK winters.

If the Felicias were and are so sensitive and fragile perhaps it from German engineering influence then as I can't remember even having an overheating worries or thoughts even in hot summer (not that they were as hot as now back then.

My wife's VWŠkoda 2015 has a oil temperature gauge but I've only ever had one car with an oil temperature gauge and I wished it wasn't there when I was driving it in winter and couldn't get to open the car up a bit to get temperature up. I never worried in summer (or winter really) as I used good oil. It was like the oil pressure gauge readings they would more often worry D.FYLAKTOS to white hair but nothing unusual for the make and model of engine.

4 hours ago, Papez said:

Oil can go well over 100 degrees in high load conditions, like highway driving, without cooling.

But you've said the Felicias have oil cooling.

If you say VW had/has the engine in a Felicia susceptible to overheating then I must take your word for it but an occasional short time at 4,100 revs seems very fragile indeed even for the quality of German engineering at the time and now.

D.FYLAKTOS seems to have driven his Felicia hard for a while, and resistant to engine oils other than for fuel economy surely his VWŠkoda Felicia should cooked to death by now, Greece weather and mountain climbs must be more conducive to overheating and engine cooking.

2 hours ago, nta16 said:

Interesting, was the alloy finned after I posted I thought about the oil pan but couldn't remember, any oil pan is a type of oil cooler really. What did this achieve in colder countries or colder UK winters.

Most oil pans, even alloy ones, are flat, Estelle's got fins inside and outside specifially to improve the heat transfer. But once they moved engine to the front, they reverted to simpler stamped steel pan... Whether it was because of the reason you mention, or because the front engine is more likely to get a hit.

2 hours ago, nta16 said:

If the Felicias were and are so sensitive and fragile perhaps it from German engineering influence then as I can't remember even having an overheating worries or thoughts even in hot summer (not that they were as hot as now back then.

The cooling system didn't change since Favorit. In fact, the radiator is inherited from Estelle So VW didn't have their fingers in that. I really only had this issue after pushing the engine near the end of the oil change interval.

Anyway, I regularly used the full range of the tachometer and the engine has done 320k km, so it wasn't fragile at all 😃 But on highways, I cruised at 3500RPM in most cases.

2 hours ago, nta16 said:

But you've said the Felicias have oil cooling.

Only the diesel ones. But the heat exhcange block from the diesel is often used as an upgrade.

I don't understand the logic by which VW fitted the oil cooler to their engines.. 1.6 AEE in Felicia didn't have one, same with 1.4 16V, both 74 and 100BHP variants, but 1.6 16V, which is basically AEE with the 1.4 head, had it... Nowadays, I think that only the 1.0 N/A doesn't have it.

2 hours ago, Thefeliciahacker said:

As I've said many times the felicia engine is a reverse flow 8v unit. They are not meant to flow at high rpm. Peak torque is at 2600rpm.

These engines are very elastic, their best region is from 1500rpm to 2200 rpm, with their ideal region being 1800-2000rpm, to me If I were to drive without seeing the tacho, I would be driving the car at around 2k.

They are 8V, but relatively wide camshaft, especially compared to the VW equivalent. I experienced torque drop between 2000-2500RPM in two different cars, the peak moved up as the chain stretched with use... The sweet spot was between 2500-3500, the engine was economical, but elastic. I could regularly achieve sub 6l consumption, with record on a 150km being 5,3l/100km, while keeping the engine in this range.

Edited 8 August, 20258 Aug by Papez

6 minutes ago, Papez said:

Anyway, I regularly used the full range of the tachometer and the engine has done 320k km, so it wasn't fragile at all 😃 But on highways, I cruised at 3500RPM in most cases.

That was my point really, they can't be that fragile to still be used 20+ years later and higher mileage and going at 4,100 rpm or more occasionally isn't going to cook the engine, I wasn't meaning driving like in that video or not driving well within the green section of the tachometer. I can't remember driving my wife's new at the time early 90s Favorit but I would have very occasionally and I doubt I would have always been in the 2-2,500 rev range. all seems so long ago that it's from different lifetimes but definitely the Estelles were fun to drive despite their lack of acceleration or speed and probably partly because of that.

I've had cars overheat when there have been problems with them, more times than they should have but if it wasn't for bad luck I would have had no luck at all with cars (and many people in the UK motor trade despite my best efforts to avoid such people).

95715 (414,3) in the Trip meter) so the distance was 414 Km, the last test was in Highway (speed till 120 km/h in ahot Summer noon).

The Total consumption was 27,3 litres which is Average 6,59 ltr/Km or 42.87 British MPG.

The Ø indication in the TC-6 agreed.

This was the last Summer MPG test to see how the combination of G12 and new radiator performed in a well know route, the next will be at Winter.

I have another photo to post, was the maximum coolant sensor temperature in high speed and the comparison with the console gauge indication.

The Winter came so what's better chance to make a Fuel Consumption test now that i have new radiator and new coolant?

City driving which means too much traffic, short routes in low speed etc the worst scenario for bad Mpg.

95962 Km in the Odometer and at the day of measurement was 96994 Km so the distance was 1032 Km (1031,4 in the trip meter)

According to the TC-6 the Total consumption (Σ) was 100,4 ltr so the Average fuel consumption was 9,72 ltr/100 Km (29.06 British MPG) which is a fantastic result for City traffic for this old design engine ! 🤩

The Average Ø indication on the TC-6 was 10 ltr which is very close.

The next test was few kilometres in City traffic, then in Highway (till 110 km speed only) and Mountain roads with 2 persons and some luggage, the weather was cold in the beginning some rain afterwards and sun with clouds in the end.

First of all sorry about the dust, we had many rainy days here and no time for car wash, the traffic was a bit heavy sometimes and later in Mountain roads i didn't push the engine more than 4000 rpm due to rain.

97187 at the end of the travel (224 distance in the Trip meter)

According to the TC-6 the Total consumption (Σ) was 13,9 ltr so the Average fuel consumption was 6,20 ltr/100 Km (45.56 British MPG) a very good result.

The Average Ø indication on the TC-6 was 6,2 ltr which is identical.

Returning from the trip, i had 97187 and according to the TC-6 the Total consumption (Σ) was 13,9 ltr.

Arrived inside the centre of the town and

i had 97350 Km so the distance was 163 Km (with 2 persons and one click heavier luggages in Mountain roads, National highway and some heavy traffic till i reach my house), the Total consumption was 24,2 ltr so i consumed 10,3 ltr of fuel so the Average was 6,31 ltr/ 100 Km (44.767 British MPG) a very good result.

I forgot to take an Average Ø photo because i was tired and suffered a lot to find a parking space.

I made 30 kilometres in City traffic, refuel to the top, zeroed everything and now it's time for a Spring season test all in City.

I don't expect miracles but the circle that began at 2025 will close when i reach the begging of the Summer 2026.

I didn't took photos from the gauge this time in purpose because the Law changed here, this is an older (2025 Summer) but i noticed that at February 2026 in National highway the needle was one tiny click above the white line.

Maybe the extra load or something else.