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Originally Posted by leonb
Is it advised to do an engin flush, or put a detergent in the oil, to try and open up oil galleries. Or what should I do?
I afraid of causing more problems if I flush, such as all the varnish/deposits coming loose and block up the whole engin.
The car has been running on Magnatec for whole of its life (160 000km). Apart from the last service before the lifters was changed when it had Mobil 1 in. I think the previous owner tried to use a synthetic to see if it wouldn't solve the problem before changing the lifters. I bought the car on 150 000, with noisy lifter, but under the agreement that he will change the lifters.
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Personally I would have the engine partially dissasembled and have it cleaned.... If there is something blocking it now there are chances that you could make it worse by putting in a cleaning agent that might dislodge more of the crud and stop the oil flow all together.... Maybee you could go in half with the person since the lifters did not fix the problem afterall......
Its not the easy way out and its more expensive but it is the way to make sure that everything in there is ok..... As well you might want to pose this question to a couple of good independant mechanics in your area and see what answers you get from them......
I collect antique clocks and its common practice for sleazy Antique dealers to blast the back of the clockworks with wd40.... It makes it run in the short term but eventually the wd40 gums up again and provides little lubrication to the clock and causes more wear in the process..... You would essentially be doing the same thing to your engine..... A short term fix that might make the same symptoms return and do more harm in the long run......