1998 BMW 740i Q&A
1998 BMW 740i Question: exhaust manifold leak
it could be your valve cover gaskets also, my 740i had the same problem and stpo when I fixed the valve cover gaskets - Visitor
I am using over 10 quarts of oil between oil changes at 3000 miles, and I have smoke coming out of exhaust pipes every time I start the car. It has 148,000 miles on it. I changed to thicker oil and...