CAPTAIN FANTASTIC
Well-Known Member
FWIW -
Shell do use separate tanks for storage at Avonmouth - they don't use the same tanks as supermarket fuels.
In my experience supermarket diesel drives OK, but it will knacker your EGR (exhaust gas recirculation) valve by about 100K miles, whereas Vpower (or BP ultimate) will keep it nice & clean indefinitely. Vpower gives me +4.2 mpg.
And yes, I've used acetone in Ford Dover engines (3.5% mpg gain), but a fag to source & store the acetone (it works by weakening the molecular & cellular structure of the diesel so it burns better)
And the best diesel fuel additive for power/smoothness/no smoke/lubricating pumps/economy etc is Millers PowerPlus.
But if anyone thinks that no additives make any difference - that's absolutely fine by me. I wasn't bothered much myself until fuel costs went through the roof.
IMHO, petrol composition is more critical to engines than diesel fuel. Yes, diesel additives will have an affect on a diesel engine such as more miles to the gallon, better lubrication etc; however, these are insignificant and virtually go unnoticed as other parameters have much greater impact ie engine service, oil change, air intake , operating regime, etc.
As a matter of interest, we have 3 Mercedes E class diesel cars; my older one is 10 years old and has done 345,000 miles, never had issues with the engine (the other two are catching up quickly) and so far it has had all kind of diesels fuels, good and bad; but the engine has been regularly maintained.