Quote:
Originally Posted by burn_this_city
If the car leaks oil avoid using synthetic. It penetrates the gaskets better than regular oil and will make the leak worse. I use it in my truck to extend the drain intervals. I typically get 15,000km between changes. Its better for vehicles using turbo chargers. When you shut down the motor while the exhaust is still hot, the oil in the turbo bearing will coke potentially causing premature turbo failure. Synthetic is resistant to burning up compared to conventional dino.
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I think this could be incorrect information. The way it was explained to me, very old cars had gaskets that swelled slightly in the presence of conventional oil, which is what kept them tight and leak free. The synthetics did not cause this style of gasket to swell, hence engines that leaked oil.
This is not, apparently, the case with any car made in the last 10-15 years.
For your 15,000km oil change intervals, how are you assessing that its time to change the oil? Not based on colour alone I hope.