I have a 2005 Mandalay 40B and have owned since 20,000 miles, has 34,000 now. It has always had a bit of a sewer smell when driving. I do not run with vents open, both tanks have been bleached but o...
Not sure how to check the batteries but that area always seems dirty but I do not see signs of the fluid boiling over. Had shop check electrical system and was good. Two batteries new 5 two years old..