What's Boiling Your Pi$$ Today?

chas

chas

Legendary Knight
Old Nick said:
142.9p a fucking litre:eek:

And having now gone through several tanks of E10 down to 12.5 miles a litre 56 mpg down from mid 60’s

So it’s costing more to go less distance - brilliant:sneaky:
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E10 is high 1.30s round here. Chipfat is low 1.40s Dunno what they're charging for E5 but I will tomorrow as the Merc is just under half and I had to stick E10 in last week so it needs diluting.

On mpg you will notice a difference due to the drop in temp on your way in to Town, it may not be soley down to E5/10 changeover.
 
Old Nick

Old Nick

Legendary Knight
chas said:
On mpg you will notice a difference due to the drop in temp on your way in to Town, it may not be soley down to E5/10 changeover.
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That’s very useful to know Chas, I was surprised to say the least with the quick drop in mileage I’m getting(y)
 
chas

chas

Legendary Knight
Old Nick said:
That’s very useful to know Chas, I was surprised to say the least with the quick drop in mileage I’m getting(y)
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There may be someone going to correct me with facts and stuff it's just something I've noticed from driving thirsty cars and monitoring the mpg.

My Merc will average 29/30 in summer but that drops to 26/27 in winter.

Fuck knows what the bike does :D

less than 10 degrees seems to be the rough trigger fwiw
 
DD67

DD67

The Peace Keeper
Staff member
chas said:
There may be someone going to correct me with facts and stuff it's just something I've noticed from driving thirsty cars and monitoring the mpg.

My Merc will average 29/30 in summer but that drops to 26/27 in winter.
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Normally petrol engines give better mpg in cold weather. Cold air is more dense & petrol engines like cold/dense air.
Hence sports cars using air scoops to drawn in cool air from outside. Rather than warmer air under the bonnet.
 
chas

chas

Legendary Knight
DD67 said:
Normally petrol engines give better mpg in cold weather. Cold air is more dense & petrol engines like cold/dense air.
Hence sports cars using air scoops to drawn in cool air from outside. Rather than warmer air under the bonnet.
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Well it's probably my habit of clearing frost off the screen by starting the fucker, putting heaters on full and going indoors to finish my coffee whilst the magic happens then :D
 
Old Nick

Old Nick

Legendary Knight
Well after many moments of research I can confirm your both right:)

Fuel economy tests show that a petrol car's fuel efficiency can be as much as 12% less in cold temperatures. Hybrid cars can suffer even more – with a potential drop of 30% efficiency or more. This means that every mile you drive in a cold car costs you potentially much more.

And (this ones good)

The increased air density provides a linear gain of a couple of percents of engine power, but the thicker air also increase aerodynamic drag, which grows quadratically with the vehicle speed, and that loss vastly overwhelms the modest power gain.

In other words, the cold, denser air produces a bit more power, but that air is also harder to push out of the way as the vehicle moves forward, and that cost is far more important.

There is a reason why ground speed records are made in a hot, high altitude desert: the Bonneville Salt Flats near Salt Lake City, Utah.
air density provides a linear gain of a couple of percents of engine power, but the thicker air also increase aerodynamic drag, which grows quadratically with the vehicle speed, and that loss vastly overwhelms the modest power gain.

In other words, the cold, denser air produces a bit more power, but that air is also harder to push out of the way as the vehicle moves forward, and that cost is far more important.

There is a reason why ground speed records are made in a hot, high altitude desert: the Bonneville Salt Flats near Salt Lake City, Utah.

And as I’m a bit of a sail in full cold weather gear perched on the bike, I can well imagine needing more throttle to cut through the denser air:)
 
DD67

DD67

The Peace Keeper
Staff member
Sarky B’stard said:
Most fuel filter replacements in the UK are needless. URL]https://www.buycarparts.co.uk/mann-filter/16165218[/URL] ?
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It's funny you should say that Sarky 😉


Thanks for the link but did you spot the average of 2.0/10 in the reviews? It says that's based on over 20 customer reviews 😳
 
Don the Don

Don the Don

Legendary Knight
@Sarky B’stard is quite right about water in fuel, I always found the sedimenter filters better with a drain cock for any water
fuel-sedimenter-for.jpg
 
DD67

DD67

The Peace Keeper
Staff member
Don the Don said:
@Sarky B’stard is quite right about water in fuel, I always found the sedimenter filters better with a drain cock for any water
fuel-sedimenter-for.jpg
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The vehicle in question is still under manufacturer's warranty Don. Hence its servicing has to follow the manufacturer's service schedule to maintain that warranty.
Or to be more accurate, the receipt needs to show that certain parts were replaced 😗
 
Don the Don

Don the Don

Legendary Knight
DD67 said:
The vehicle in question is still under manufacturer's warranty Don. Hence its servicing has to follow the manufacturer's service schedule to maintain that warranty.
Or to be more accurate, the receipt needs to show that certain part were replaced 😗
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Oh I know mate these things where from much older vehicles, I can remember buying the old salmon tin type fuel filters for my Landrover for 50p but with all this common rail type engines everything went through the roof
 
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