We received this email from one of our customers back in September with a rave review of our Fyrex CI Product
I have a DMAX diesel with 150k on the clock. It developed an engine rattle up to 2000 revs but after that it was OK.
First mechanic said it was normal. Second mechanic said there was a problem but didn't know what it was. Third mechanic said it was a carbon problem and installed a catch can.
Fourth mechanic (Dubbo Machinery Service) said it was an injector problem and would cost $800 each plus fitting, maybe $5,000. They suggested and supplied some Fyrex CI and recommended a double dose for the first tank. After about 200km the rattle was gone, there was less smoke, performance was better and economy improved.
Just waiting for Glad to drop the flag and we'll be off again.