I was just recommed seafoam for cleaning injectors. I don't take first recommendations and always try to be as sure as I can that its the right choice. Diesel Mech. that work here says Lucas product is really good too. I know the top end engine cleaner from seafoam is AWESOME for Chevy trucks (gasoline) to remove carbon from intakes and valves. It smokes like tear gas for a few minutes after startup but probably gave me back about 20hp. I'm going to try both Lucas and seafoam to try and avoid pulling my injectors.

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'83 300DT
'04 Forester XT--modified
'61 Beetle EFI Turbo
Burley recumbant