Part Synthetic oil in a E90 320d??

GavinM1984 · 10-30-2010, 09:47 AM

First post,

I've put Part Synthetic Castrol GTX 10W40 a3/b4 in my E90 320D.

I know its not the correct oil, I was getting a friend to change the oil and had to buy oil quickly at a nearby supermarket.

I've done over 1000 miles since and the car seems fine, but not sure if its doing long term damage. It said 'for petrol & diesel' cars on the front. Is this damaging the engine?

Is it worth draining the oil and buying a fully synthetic oil and changing the filter again? If so, what oil would you put in?

Thanks

Gavin

GavinM1984 · 10-30-2010, 10:35 AM

Its done 80k and is a 2005 plate

AlanAZ · 10-30-2010, 08:06 PM

Yes, these engines are designed for full synthetic oil, also 10W is too heavy at cold temps. Use a BMW LongLife-04 approved oil. They will show BMW LL-04 on the back label.

In the UK, I'd pick a thinner oil, like 0W30.

10-30-2010, 09:47 AM	#1
GavinM1984 New Member 1 Rep 6 Posts Drives: 320d se Join Date: Oct 2010 Location: UK iTrader: (0)	Part Synthetic oil in a E90 320d?? First post, I've put Part Synthetic Castrol GTX 10W40 a3/b4 in my E90 320D. I know its not the correct oil, I was getting a friend to change the oil and had to buy oil quickly at a nearby supermarket. I've done over 1000 miles since and the car seems fine, but not sure if its doing long term damage. It said 'for petrol & diesel' cars on the front. Is this damaging the engine? Is it worth draining the oil and buying a fully synthetic oil and changing the filter again? If so, what oil would you put in? Thanks Gavin
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10-30-2010, 10:35 AM	#2
GavinM1984 New Member 1 Rep 6 Posts Drives: 320d se Join Date: Oct 2010 Location: UK iTrader: (0)	Its done 80k and is a 2005 plate
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10-30-2010, 08:06 PM	#3
AlanAZ Captain 40 Rep 818 Posts Drives: E90 325i sport manual Join Date: Aug 2009 Location: Scottsdale, AZ iTrader: (4)	Yes, these engines are designed for full synthetic oil, also 10W is too heavy at cold temps. Use a BMW LongLife-04 approved oil. They will show BMW LL-04 on the back label. In the UK, I'd pick a thinner oil, like 0W30. Last edited by AlanAZ; 10-31-2010 at 08:00 AM..
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