Liam121093 Posted August 6, 2017 Share Posted August 6, 2017 I have heard of people mixing oil with diesel for better lubricating and a better burn. Is this a good idea? and if so anyone no the ratio? Quote Link to comment Share on other sites More sharing options...
mjt Posted August 6, 2017 Share Posted August 6, 2017 There is a school of thought that doing this compensates for the reduction in suphur in modern diesel. I don't think anyone has done any definitive studies on it though. If you want to try it you should use a good low-ash two-stroke oil at a ratio of about 1 part in 200. Quote Link to comment Share on other sites More sharing options...
iFocus Posted August 7, 2017 Share Posted August 7, 2017 I'd be careful mixing anything with your diesel; injectors on modern cars are designed to take anything more than diesel and mixing oil in could block the injectors. In addition if you have a DPF it could also clog the it and cause early failure. FYI, diesel is already extremely lubricating so it doesn't need any 'help'. Quote Link to comment Share on other sites More sharing options...
coalport Posted August 7, 2017 Share Posted August 7, 2017 I've been using Dipetane on and off for the last few years, helped with dropping emissions to get through test, http://www.halfords.com/motoring/engine-oils-fluids/fuel-oil-additives/dipetane-1ltr-fuel-additive Quote Link to comment Share on other sites More sharing options...
DJ_Andy_M Posted August 7, 2017 Share Posted August 7, 2017 Use a premium diesel ideally BP as Ford recommends. I always use BP Ultimate where I can as Shell V-Power causes my DPF to regenerate a lot more frequently than normal Shell/BP/Esso. I don't touch supermarket fuel either due to the lack of additives. 1 Quote Link to comment Share on other sites More sharing options...
Liam121093 Posted August 7, 2017 Author Share Posted August 7, 2017 Thanks for the advice think i'll leave it and just stick with BP. Quote Link to comment Share on other sites More sharing options...
iFocus Posted August 7, 2017 Share Posted August 7, 2017 5 hours ago, DJ_Andy_M said: Use a premium diesel ideally BP as Ford recommends. I always use BP Ultimate where I can as Shell V-Power causes my DPF to regenerate a lot more frequently than normal Shell/BP/Esso. I don't touch supermarket fuel either due to the lack of additives. Surprisingly Tesco Momentum 99 is reputed to be one of the best fuels you can get though... so much for rubbish supermarket fuels. TBH, I think the whole supermarket fuel thing is a load of rubbish; I believe there are only 3 refineries in the UK and they supply all of the fuel stations including supermarkets. Quote Link to comment Share on other sites More sharing options...
Dee_82 Posted August 7, 2017 Share Posted August 7, 2017 Refineries are not the be all and end all of Diesel and Petrol production, additives are mixed with the base fuel afterwards, different additives for different suppliers so yes there are only a small number of refineries but there are countless variations to the base fuel that is produced The Lube in diesel comes from the sulphur, low sulphur = low lube, there isn't any dark art to all that. Ive been adding around 200ml of 2 stroke low ash mineral oil to a full tank for years, theres a noticeable improvement in mpg and noise, approx. 4dB at idle and about 5 mpg on the motorway. Tescos premium isn't the same as tescos regular, so yes it is better, but its better because of the additives put in it. 3 Quote Link to comment Share on other sites More sharing options...
iFocus Posted August 8, 2017 Share Posted August 8, 2017 9 hours ago, Dee_82 said: I've been adding around 200ml of 2 stroke low ash mineral oil to a full tank for years, theres a noticeable improvement in mpg and noise, approx. 4dB at idle and about 5 mpg on the motorway. What does that do to your emissions though? Does it affect them come MOT time (or whatever the local equivalent is in your area). Quote Link to comment Share on other sites More sharing options...
Dee_82 Posted August 8, 2017 Share Posted August 8, 2017 my emissions, regarding smoke test are better now then when I brought the car! due to the way the car works in a smoke test, it never actually hits peak fuel. even smacking in to the rev limiter. The car is pretty cleaver, no load, low fuel supply. :) unless they did the smoke test on a rolling road or you car is utter trashed / major boost leak you'll be struggling to fail an MOT smoke test :) to be fair, I have a rear mounter cam and haven't seen any large smoke deposits, I get the occasional water vapour burst on a cold evening under heavy load but nothing more around the 1min mark Quote Link to comment Share on other sites More sharing options...
JamieC Posted August 9, 2017 Share Posted August 9, 2017 On 8/7/2017 at 7:36 PM, iFocus said: Surprisingly Tesco Momentum 99 is reputed to be one of the best fuels you can get though... so much for rubbish supermarket fuels. TBH, I think the whole supermarket fuel thing is a load of rubbish; I believe there are only 3 refineries in the UK and they supply all of the fuel stations including supermarkets. This is true but the supermarket fuel is of a lower standard compared to the likes of BP for example. The supermarket fuel is of high enough quality to meet British and EU Standards but not BP's and Shell's own higher standards. 1 Quote Link to comment Share on other sites More sharing options...
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