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      05-21-2019, 01:27 PM   #7
Bimmer_Engineer
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Drives: 2007 335i
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Quote:
Originally Posted by mweisdorfer View Post
Blue smoke at start up = bad valve stem seals.

You could try and solve your problem with a oil additive. Liqui Moly Stop Smoke is a great additive. You will need to change your oil & filter & add 1.5 to 2 bottles of this stuff, which = 20oz. Then add 6 qts 12 oz of oil.

It will take 500 miles for it to fully kick in. Some reviews say it takes two treatments and to not go WOT until you get 500 miles on the engine treatment.

If after 2 treatments it doesn't work, then unfortunately your only other option is to physically replace the seals.
I'm gonna give this a shot. I've got some oil smoke for about 2-3 minutes on a cold start...i've been thinking it's the valve guide seals. I added ATP seal conditioner with my last Castrol 0W-40 titanium edge oil change and I had to add a quart this morning after about 750 miles.

I ordered 2 bottle of liqui-moly stop smoke from germany off of ebay and a liqui-moly 0W-40 oil change kit off of FCP...I'll report back in a few months on the results...
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