Re: Mixing semi-synthetic oil with fully synthetic
Hi Daka ! Firstly changing to fully synthetic you should flush system through, but I have to question any advantage of using fully synthetic oil in a low reving deisel engine.
The cost will be roughly 50% more and if you are changing it every season or 100hrs you will gain nothing in terms of reliability or engine life (unless of course you are concerned that one of your engines might dump all its oil mid journey somewhere). Hope this helps. [img]/forums/images/graemlins/smirk.gif[/img]
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