Derv

The lightest hydrocarbon distillates (from crude oil) are the most flammable, and volatile.

You’ve got (lightest to heaviest)

(1) Light Naptha - used in disposable lighters (NOT “ronson lighter fuel”) This is a compressed gas such as propane, butane, and/or pentane as liquid that vapourises as soon as you release the pressure. Puncture a throwaway lighter to see this in effect. Boils away quickly in air under no pressure. Can be lit by a spark. Contains C3H8 to C5H12

(2) Heavy Naptha - Pretty much the main constituent of Petroleum Spirit (Unleaded Petrol) Has a vapour that makes an exposive mixture in air at normal temperatures. Can be lt by a spark.
http://www.youtube.com/watch?v=QkJdaU92Ln8 Contains C4H10 to C12H26

Fuel Oils: Contains C10H22 to C20H42

(3) “Light” - Kerosines - Not as flammable as Petrol, but more flammable than Diesel. Used as Aircraft, Rocket, and Stove (paraffin) fuel. Cannot be set fire to with a match, unless atomized or wicked. Additives to keep the fuel from “freezing” will also make it more flammable (cut it with lighter fuels), thus it is easier to start a fire with “their” stocks of Kerosine aircraft fuel in a place like Norway than in this country.
A burning paraffin stove will have the same fumes as can be smelled near an airport…

(4) “Gas Oils” - What we call Diesel, DERV, cherry or clear. Has to be wicked or compressed to auto-burn. Stick a burning match into it, and it’ll go out. Can be set alight IF heated up first to create an over-vapour…
Chemically, they’re pretty much the same - with different coloured dyes added for taxation purposes.

(5) Heavy Fuel Oil - Can be used to run a boiler, but has to be pumped/atomized from cold. Viscosity too high to be used for engines.

C16 and upwards are effectively “wax”. Since fuel oils contain hyrdrocarbons in the range C10 to C20, it is possible to “wax” them at low temperatures. Those waxes that are already entirely solid at room temperature will of course contain only those heavier non-volatile hydrocarbons upwards from C16… These have to be MELTED, and wicked, to burn.

splitshift:
35 second Redwood viscosity index fuel oil, your central heating,your combine,the big John Deere & your hdi Peugeot OR tdci Ford run just nice on this but don’t tell anyone I said so! :laughing: :laughing: (btw Known as gas oil in Spain also)

A bit confusing perhaps?

Red (gas oil) is 35 secs, Kerosene (domestic heating oil) is 28, but some boilers run on gas oil.

A DERV (Diesel Engined Road Vehicle) will run (illegally) on kero, but will tend to run hot.

DERV is now a rip off term.
“White” diesel by law has to contain at least 10% bio fuel(rises to 20% by 2020 I think)
Run a diesel on “red” and you will gain 10% more power/mileage as the red does not have the bio in and still contains all the “dirty” contaminents such as sulphur which raise the thermal efficiency of the engine,in other words it explodes instead of “fizzles”

When engines are rated at the manufacturers guess which fuel is used on the dyno rig?

It used to be that red was the same as white, it just had a dye added to it, maybe it’s different now?

newmercman:
It used to be that red was the same as white, it just had a dye added to it, maybe it’s different now?

Norb its all different now.

Me and you are diinosaurs like to meet you though.

newmercman:
It used to be that red was the same as white, it just had a dye added to it, maybe it’s different now?

True mercman but we are not privvy to the the powers that be are we. stay safe.

Its still the same newmercman. Many farmers have endured some massive bills to fix expensive modern tractors because they are prone to algae growing in the fuel in the vehicle tank due to the bio content.

Yeah trubster slip of the tongue, been a while since I bought some over there :laughing: mind you, I wasn’t far out.

Driveroneuk:
Its still the same newmercman. Many farmers have endured some massive bills to fix expensive modern tractors because they are prone to algae growing in the fuel in the vehicle tank due to the bio content.

But hold on…

What about BKing’s post about 10% power gains from running on red :question:

That would mean…

newmercman:

Driveroneuk:
Its still the same newmercman. Many farmers have endured some massive bills to fix expensive modern tractors because they are prone to algae growing in the fuel in the vehicle tank due to the bio content.

But hold on…

What about BKing’s post about 10% power gains from running on red :question:

That would mean…

…we’re not paying enough taxes on our whoppers. :confused:

Driveroneuk:
Its still the same newmercman. Many farmers have endured some massive bills to fix expensive modern tractors because they are prone to algae growing in the fuel in the vehicle tank due to the bio content.

So if its the same how come it smells so different?
Does the dye have a stenchant in it as well.

Bking:

Driveroneuk:
Its still the same newmercman. Many farmers have endured some massive bills to fix expensive modern tractors because they are prone to algae growing in the fuel in the vehicle tank due to the bio content.

So if its the same how come it smells so different?
Does the dye have a stenchant in it as well.

It’s all about taxed at road fuel rates or not.In the case of Derv it was the RV part which mattered.IE diesel or Derv the only difference being the tax paid on the road use stuff.In which case by the logic of those better days there was no need for all the aggravation of identifying pumps/tanks as red diesel etc etc and diesel.It was either diesel or it was Derv.Simples. :unamused: :laughing:

nationwidefuels.co.uk/rebate … ed-diesel/

Carryfast:

Bking:

Driveroneuk:
Its still the same newmercman. Many farmers have endured some massive bills to fix expensive modern tractors because they are prone to algae growing in the fuel in the vehicle tank due to the bio content.

So if its the same how come it smells so different?
Does the dye have a stenchant in it as well.

It’s all about taxed at road fuel rates or not.In the case of Derv it was the RV part which mattered.IE diesel or Derv the only difference being the tax paid on the road use stuff.In which case by the logic of those better days there was no need for all the aggravation of identifying pumps/tanks as red diesel etc etc and diesel.It was either diesel or it was Derv.Simples. :unamused: :laughing:

nationwidefuels.co.uk/rebate … ed-diesel/

Rubbish 3 years ago it was announced that “red diesel” would be phased out and only white full duty fuel would be on sale.Anyone using white for fridges or agricultural use would be able to reclaim the duty paid.So what happened to that “idea”.
A litre of white weighs 960 grammes a litre of red weighs 930 grammes.
Does the dye reduce its density as well?

Bking:

Carryfast:

Bking:

Driveroneuk:
Its still the same newmercman. Many farmers have endured some massive bills to fix expensive modern tractors because they are prone to algae growing in the fuel in the vehicle tank due to the bio content.

So if its the same how come it smells so different?
Does the dye have a stenchant in it as well.

It’s all about taxed at road fuel rates or not.In the case of Derv it was the RV part which mattered.IE diesel or Derv the only difference being the tax paid on the road use stuff.In which case by the logic of those better days there was no need for all the aggravation of identifying pumps/tanks as red diesel etc etc and diesel.It was either diesel or it was Derv.Simples. :unamused: :laughing:

nationwidefuels.co.uk/rebate … ed-diesel/

Rubbish 3 years ago it was announced that “red diesel” would be phased out and only white full duty fuel would be on sale.Anyone using white for fridges or agricultural use would be able to reclaim the duty paid.So what happened to that “idea”.
A litre of white weighs 960 grammes a litre of red weighs 930 grammes.
Does the dye reduce its density as well?

Don’t ask me that link was a lot more recent than 3 years ago and it doesn’t say anything there about any differences between red or white except for the dye/chemical identifier.As for derv that was a better easier way of identifying/seperating tax paid fuel at the pumps/tanks than marking red diesel tanks/pumps as red diesel/untaxed etc etc.