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1992 300E
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35 Posts
Discussion Starter · #1 ·
Hi guys,
Has anyone used EXP4 additives? I saw them on a car program last night and after using them ( the oil and gas additives I guess, I caught it at the end) the car was dyno and it gained 9 HP. The program hoast said it must have been due to reduction on frictional loses, it was not and advertising program. Any experiences? does this product really works?
 

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Benz 260E and others
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349 Posts
Any bottled product (no exception) advertizing or claiming any HP gain or miracle results are to be taken as being a joke.
Never heard of that magical EXP4,but it will never get into any of my cars, that's for sure.
Consumer Report published a report about a year ago. They have identified nearly 200 "magical" products on the market.
The best one don't even come close to the claim they make.
The average ones don't give any measurable results.
The worst one can cause damages to the vehicle it is used in.
 
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