Author Topic: Bmw E30 318is oil leak after oil change? (Read 4301 times)

Bimmer805 · « **on:** December 25, 2010, 05:24:28 PM »

Hi i just got my 318is last monday and did an oil change last thursday and now it is starting to leak oil and the check engine light came on? when i got the car it was not leaking a single drop of oil but now it leaks a bit of oil? what can cause it to leak oil and turn the check engine light on? PLZ HELP

Bl0mgren · « **Reply #1 on:** December 25, 2010, 06:08:55 PM »

Did you change the gasket ring on the oilplug?
part #9

monty23psk · « **Reply #2 on:** December 26, 2010, 08:13:12 PM »

Make sure to change all the gaskets and washers when changing oil and oil filter. Where is the leak coming from? If you are low on oil, only the oil light will come on but if you have the CEL on, then it could be a sensor not working due to low oil somehow.

Bimmer805 · « **Reply #3 on:** December 27, 2010, 10:36:58 PM »

oh am i suppose to change the gasket ring?

Bimmer805 · « **Reply #4 on:** December 27, 2010, 10:38:44 PM »

the CEL was something else i messed with now its off but do i need to change the drain plug gasket after every oil change? i changed the gaskets in the oil filter

monty23psk · « **Reply #5 on:** December 27, 2010, 11:19:53 PM »

you should change them as they get warped when you tighten the bolt. But first you need to figure out where oil is leaking from. Is the bolt all wet under it?

Bimmer805 · « **Reply #6 on:** December 28, 2010, 12:24:18 AM »

idk ill last time i check it was a bit of oil under the bolt but i tighten it. but i need to check again to see if it still from there

z3frog · « **Reply #7 on:** December 28, 2010, 11:46:36 AM »

Yes, #9 is a copper crush washer and should only be used once. Every time you tighten the drain bolt, it deforms to make a good seal and prevents leaks.

If you get a good oil filter from Mahle etc, the crush washer, o-rings, etc are all included in the kit.

Bimmer805 · « **Reply #8 on:** December 28, 2010, 11:11:28 PM »

oh ok ill look into that next oil change