300tdi MPG final verdict

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300tdi MPG

  • Total voters
    146
Pretty sure im getting 30 + but if i was really concerned about mpg i wouldnt of bought a landy - there would be a daewoo matiz on the drive.

If i didnt care at all about mpg id have bought a v8 :D
 
Use my 300TDi daily to get to work and back, round trip of 110 miles, so do about 550 miles per week. Total weekly mileage is around 580-600 and I spend on average £105 per week on fuel. Not too bad for a 14 year old discovery!!

p.s. and I don't drive that slow either!!
 
shane.k said:
Join a red diesel club. Chances of getting nicked are drastically reduced.
Click to expand...

There's a snag since the City Diesel (ULSD) came in as the white doesn't smell (well not much) On the other hand the red called"gazol" in some countries can be detected by the nose from a hundred yards away particularly if its being used in a farmers old Ford Escort van. Some people use yellow central heating oil, just add a percentage of lubricating oil. The main snag with having central heating oil is that "travellers" are liable to steal it only to steal it again once the tank is replenished. Unless ones oil tank is made as secure as Fort Knox the oil will go. At the farm supplies store they sell white hydraulic oil and the drums are labelled "Not to be added to ULSD as a pump lubricant as this oil has not been taxed as motor fuel". Now that sounds like a hint to me! Common Rail diesel engines are very fussy about the lubricity of their fuel and to be honest ULSD is barely adequate. For example a lorry driver whose car was low on fuel was given some white diesel by his boss. The container that was used had previously held Truck Cleaner (detergent) and the small traces that were left destroyed the high pressure pump. The lorries that have in-line Simms type pumps are unaffected by a bit of detergent.

The worst double standard of red versus white concerns boats. Commercial fishing boats can legally use red but "pleasure boats" also used for fishing are expected to use road legal DERV. Can someone tell me when the government last fixed the potholes in the sea? In any case when a boat is outside the 12 mile limit the law doesn't apply.
 
Last edited:
Davey1000 said:
There's a snag since the City Diesel (ULSD) came in as the white doesn't smell (well not much) On the other hand the red called"gazol" in some countries can be detected by the nose from a hundred yards away particularly if its being used in a farmers old Ford Escort van. Some people use yellow central heating oil, just add a percentage of lubricating oil. The main snag with having central heating oil is that "travellers" are liable to steal it only to steal it again once the tank is replenished. Unless ones oil tank is made as secure as Fort Knox the oil will go. At the farm supplies store they sell white hydraulic oil and the drums are labelled "Not to be added to ULSD as a pump lubricant as this oil has not been taxed as motor fuel". Now that sounds like a hint to me! Common Rail diesel engines are very fussy about the lubricity of their fuel and to be honest ULSD is barely adequate. For example a lorry driver whose car was low on fuel was given some white diesel by his boss. The container that was used had previously held Truck Cleaner (detergent) and the small traces that were left destroyed the high pressure pump. The lorries that have in-line Simms type pumps are unaffected by a bit of detergent.

The worst double standard of red versus white concerns boats. Commercial fishing boats can legally use red but "pleasure boats" also used for fishing are expected to use road legal DERV. Can someone tell me when the government last fixed the potholes in the sea? In any case when a boat is outside the 12 mile limit the law doesn't apply.
Click to expand...

I wouldnt dare run a modern diesel on anything but diesel, i have seen plenty of pumps fail due to such minor fuel issues, even some of the cheaper brands of diesel are causing issues on fussy engines!

As for my disco, currently i reckon im getting about 20mpg but i have upped my fuel pump to the limit and carried out some breathing mods, this is as i usually use mine off road so im not after economy, i have an astra van that delivers 65mpg so that does me fine, i can get that driving at about 75 so it is much better than my disco.

If mpg is important then get a second car, i bet insurance costs will be less than savings you will make, a decent diesel small car will get 50+, a vw bluemotion or similar will hit 70+ and petrol is now the cheaper option for both buting and maintanance
 
Previous Disco 96 300tdi v my new 03 td5 - fuel consumption of 300tdi - expensive v Td5....erm expensive!

Think the td5 is better but in the big scheme of things they are all thirsty buggers but worth every penny! Towing over 2000kg regularly (horses) the td5 seems to be better than my old 300.
 
i bought my 1st disco in nov and wanted to work out what i got..ended up at 450 to a ful tank standard, 450 to a tank with decat and egr removed, 380(ish) with off road tyres, il be going back to road tyres soon and tweeking pump..
 
From my 300tdi auto I usually get about 30 mpg in combined usage, but more town than motorway in that. That's brim to brim calcs about 3 times. I did do a longish run last year to Hull and back ( there's a TV show in that statement somewhere lol ) to Durham, towing a 3500kg boat back and used about £40 of diesel, silly me forgot to calc the mpg.
 
Just checked mine from full tank. Drove all week and then refilled and got 32mpg
That's 80 per cent urban and deriving carefully

Going to just drive normal next week and see if it makes any difference.:)
 
Mines been getting from 19-27 recently, 27. Running on bio so can't complain! Pump tweaked, snorkel and 265/75 mud terrains. Due a service so hoping to see steady 27 again. Shows how much difference the tyres make when I managed 36 on standard road tyres on a motorway!
 
Does it really matter?

If you want decent mpg then surely drive a matchbox on wheels ... personally I'm getting about 27mpg local and about 32+mpg on a decent run. This, running 235/70/16 AT's (30psi /f & 36psi/r, no EGR but still with CAT.
 
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