I f you are using 2 stroke oil, at the moment Morrisons supermarkets charge £2.00 for 500ml, although knowing supermarkets if they get a run on 2stroke oil the price will go up. I really have convinced myself the car runs better and starts easier since i started using 2 stroke oil as an additive,
I use the oil at approx 200 to 1. To save the brain every time you fill up, write out the various amounts to add, depending on amount of fuel purchased, on a piece of card and keep in car.
cheers
Jim A
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1996 300Tdi auto(Jap reimport)