SO the smoke is coming out the exhaust? Blue? Then your burning oil. It could be valve stem seals or rings. To replace them, you will be taking the top end of the engine off to get to them. Without any working knowledge of engine rebuilding, this is best left to the pros. as you need special tools and equipment. If you really want to try it, do some research online and or buy a service manual.
The smoke comes out of the exhaust. I may be colour blind but the smoke is greyish. True, oil consumption is just unsual
Thanks I will take it to the pros
Looking for a Used 850 in your area?
CarGurus has 34 nationwide 850 listings and the tools to find you a great deal.
Search Volvo 850 Questions
Volvo 850 Experts
Related Models For Sale