Tuesday, Jun 27, 2006 at 14:03
Rob,
I find it hard to tell improvement in economy because I also fitted bigger tires, a bigger exhaust, an intercooler, and other mods. It all runs pretty
well though.
I had a look in the inlet manifold the other day and it is clean. The sump also has very little black sludge, only a thin layer can be rubbed off if I put my finger inside the drain plug. Before I cleaned it out there was a thick black lump stuck to the plug and coating the bottom of the sump.
When I cleaned thing out first, I used the recommended big dose of
CEM, ran it for the recomended time and dumped the thick black sludge. I changed the oil with cheap Supercheap Auto stuff and ran it for a day then used the lesser dose of
CEM ran it for the recomended time and dumped slightly cleaner oil, changed filter and filled with good stuff. It was quite suprising how black the first stuff to come out was (stains your fingers realy black).
I also removed and cleaned the inlet manifold, ports and valves when I fitted the intercooler. Much of the carbon buildup here was from the ERG valve not functioning properly and from crank case blow-by oil through the breather pipe into the inlet.
I have fitted a oil catch can and the whole thing has remained clean for the last 120,000km.
I change oil every 5,000 and use the
CEM flush on every second oil change at 10,000 and also change the filter then (but not at 5000) as I figure that any dislogged crap will catch in the filter when the
CEM is used.
G
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