According to some web pages, the hand pump supplied in Waxoyl kit is not so good.
http://www.google.co.uk/search?q=cache:MAj3uiP--0UJ:www.british-cars.org.uk/kimber/MGF/mgfaq2.htm+waxoyl+hand+pump&hl=en&ie=UTF-8
http://www.fizzindi.demon.co.uk/rustproof.htm

Anyone has experience with the kit?

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1992 300D 2.5 turbo diesel. 319 k miles.
124.128 chassis, 602.962 engine, 722.418 tranny.