At around 60k to 70k... a can of BG44k that is twice the percentage of chevron, and will do the trick.
However... new truly direct injection cars are now developing a new problem... as the fuel is truly directly injected into the engine, and not through the manifold, intake valve path, we are seeing the intake valves being coked up due to egr gas being injected through this path. In earlier engines, the gas was also fed through this path and kept is clean... but new direct injection engines dont have that benefit of cleaning anymore.
SOOOOOOOOOO..
some cleaner needs to go through the gas system and clean the injectors...
and.... some cleaner needs to go through the air path,, and clean up the intake valves...
in the last couple of years there are more and more service bulletins on cleaning up the intake valves.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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