
Originally Posted by
Jr ///M5
I've heard that it is less than 5 minutes idling time to get the temperature up. I believe I've found a fluid that is compatable with the ESSO, it's made by Pentosin and runs between 10- 15 dollars a quart. Now that we own the E60 and now it has 100k miles on it, I'll be changing the fluid in the spring. What I'm not thrilled about is the fact that the filter is integrated into the pan. Change the filter, change the pan, get your wallet out 'cause it's 2 bills, that's just the filter!!! Coupled with about $300 worth of fluid and it's a $500 DIY.
It's cold here, bitter cold. Minus 6 degrees this morning. The important fluid to check in these parts was the coolant in Aubrey's 318iS and Lori's E60. They are now both protected down to -34 and if it gets that cold around here, you better move over, 'cause here I come! =)
The E60 left Lori stranded about a month ago. The cyclone valve or PCV froze/failed and unlike the E39 when this happened, it decided to start emptying the oil sump into the combustion chambers....she noticed smoke pouring out the exhaust, called me and said there wasn't any lights on, and I told her to pull over and shut it down immediately. The tow company rescued her and the car was soon inside the garage. She was about an hour away when it happened. Keep in mind that the car has 100k miles on it now, the E39 failed at 153k miles. The car had about 3 1/2 quarts of oil left in it, I can now see how people lock their motors up. It takes me about 6 hours to change the valve and all the hoses and do the oil change and clean the plugs off. New plugs were installed after the work was done because you have to drive the car about 50 miles at high rpm and temperature to burn out the oil in the exhaust. You should have seen it, just like a mosquito fogger. I couldn't see behind me, it was that bad.
If you do a search on "cyclone valve" you can read the horror stories that others have experienced and repair bills from the dealer ranging from $800 to $7000 for a new engine. Cost to DIY is around $200 for all the parts. In your area where temperatures are not as much as a factor, the valves still fail as they dry rot. I believe this should be a 60k mile maintenance item. BMW has redesigned the valve, the dipstick tube and hoses with an insulated kit that is supposed to help, my X5 already came from the factory with the insulated variety, but that is not insurance that it won't fail too, just a deterrent. Others have already experienced failure of the new type, especially in Canada where temperatures are often -20. It seems that these engines do not run hot enough in the cold to burn off condensate that developes on short trips. I opened the oil filler cap on the X5 and used a paper towel to dab around the inside and it soaked the towel with condensated water.
I don't know what the answer is to this problem, neither does BMW, as they are not assuming any liability for failure of this valve. Whatever happened to the simplicity of the old style PCV valve that would rattle? Oh yes, it was replaced with some plastic and a rubber diaphram, and let's cram it underneath the intake manifold where you can't even see the damn thing. There is a way to check the operation of the valve, but it requires a manometer to check crankcase pressures. Problem is, it can work one day and fail the next. Keep an eye on yours, and if your valve cover suddenly blows off, spilling oil all over the exhaust, and filling the cabin with smoke, or you look in the rear view mirror and can't see the guy behind you. That is when you know the valve has had catastrophic failure.