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The placebo effect (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by Chris C, '83 528ea, Victoria BC. on March 31, 2002 at 18:17:31:

In Reply to: Z-Max additive - Any experience/comments??? posted by Jeff in MN on March 31, 2002 at 17:00:51:

I've used TufOil, MotorUp and DuraMax before. Dunno about Zmax, but unless the engine is in terrible running condition due to improper care, personally I don't think you won't notice any change (unless you count the placebo effect).

IMHO nothing beats regular tune-ups and servicing.

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