I've been looking to do a diesel purge and I went to great lengths to get the Lubro-Moly Diesel Purge specifically. When I just went to my local auto store, they had all these injector cleaners and diesel additives. Even Lubro-Moly carries an assortment of these cleaners and additives. What's the honking difference? There are so many...

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1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition