peterb wrote:
I've used castrol engine flush lots of time in mini's. It says to warm engine, put flush in and just run engine at 1,000 - 1,500 rpm for 10 minutes. No driving so it would have no effect on gear train other than cleaning and i've seen some really nasty crud come out them.
Only car i've had that it may have contributed to an engine death was a 1257LS that had super low k's, lest than 50,000, but had never been on a trip further than 40 k's. I flushed it thinking it might fix the wispy smoke.......it fixed the wispy smoke, turning it into a Jame Bond smoke screen.
The problem is (as I see it), once you start peeling off gunk and stirring up bits of metal and other debris (that was trapped in the gunk) and suspending it all in the oil...you only have a tiny orifice in the gearbox casing to "flush" all that crap out.
So...maybe use Castrol engine flush, add new oil and filter, drive it then even do another oil change if you are noticing suspended chunky bits etc etc