Originally Posted by
Doug_MPS6
I bet half the problem, if indeed there is an endemic one, is that the majority of these turbo cars are spending their lives in urban areas and short runs to and from work. Lots of over-fuelling due to intermittent traffic light boosted sprints and deceleration, very few long steady or sustained high speed runs, sooting cylinders, plugs and cats, acid and moisture buildup not being burned off, lots of crud everywhere, even down the exhausts. I never saw a high-mileage, open-road engine cak itself up or rust out its pipes like some of these seem to be doing.
Even if you live in Ballarat and run to Melbourne, or say from Parramatta to Sydney, every day, the issue isn't really resolved in those commuter traffic quagmires, where in 6th you are still only at 2500-3000rpm at best, and then only in short bursts. Where I live, it is only 8km into Perth and given the funereal pace of traffic here, thanks to those who have been beaten into submissive compliance by the speed nannies and who choose to clog up our urban arteries with their own version of automotive cholesterol, I'm lucky to see 2500 rpm in 5th, far less get into 6th. Result?.....unhappy engines. 100,000kms is nothing. There's no reason these motors shouldn't be seeing 200-250,000 before major attention being required, perhaps even more. I can't talk - I've only got 45,000km on mine in 4.5 years! :-(
I just went on a weekend sporting activity involving mostly a reasonably fast country run over 120kms, apart from a bit of the alleged "freeway" south, at a sustained higher speed than normal. Not far, but enough to notice a marked improvement in my engine's demeanour by the time I got back home.
It's a good case for more weekend club runs.......