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-   -   Oil (http://www.bimmerfest.com/forums/showthread.php?t=657201)

tymaster00 11-09-2012 02:20 PM

Oil
 
Hello everyone. I'm new to the forum and have a quick question.

Basically, is it safe to put synthetic oil in a high mileage engine?

My car has 300k.


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BMW318i_ 11-09-2012 05:35 PM

Depends what weight it is and if It's right for your climate otherwise there's no problem using synthetic oil. But I would stick to good old dino oil if you can. It's much cheaper and there's no need to use synthetic on high mileage cars.

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downhiller 11-09-2012 08:18 PM

you can cause oil leaks. synthetics clean the engines really good. so if you have some carbon gunk keeping a gasket sealed, synthetic will pull it out and cause an oil leak.

Tkaczuk 11-09-2012 08:40 PM

I would suggest not too. Castol gtx has a high mileage semi-synthetic that I ran in my E30 and made it run a little smoother and may have helped with the oil leak it had.

BMWFatherFigure 11-10-2012 03:58 AM

+1 on Tkaczuk. A Castrol lecture I attended advised use only oil available at the time of an engine's manufacture. That is what it was designed to run on.

Tkaczuk 11-10-2012 05:59 AM

My friend said the same thing. I think same weight in other oils would be okay but more specifically moble 1 would run about the same. I haven't used to many other oils. Royal Purple went in my 24v swap.

Nick323 11-12-2012 12:52 AM

I have often wondered why some people put synthetic oil into their banger ?
There is a oil for every aplication & just because you abused your baby in the past, expensive oil will not make her love you again ;)
Synthetics are great for high rpm, high heat applications :thumbup: Oh yes, before I forget, they look good in the ads too :rofl:
I believe in spending my money wisely i.e. Value for money...
So before I spend money on a Lubricant I don't need I will maybe flush that LSD with new oil or the radiator, or maybe even flush the dark juie that started life as hydraulic fluid in your break & clutch system....

tymaster00 11-12-2012 04:03 PM

Thanks for your input.

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E30949/909 11-14-2012 07:19 PM

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Oil


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