B+ motorhomes

Actually I run 62 PSI all round, based on the total weight of the unit and the weight of both ends. Yes we store our extra gallons of drinking water there. Just enough room for 2 gallons and a small trash container. Yours may be somewhat different than mine though because of the difference in our chassis. I do not have an oven in mine and that gave me more storage under the 3 burner range, which gets canned goods and such in twin slide out Tupperware trays. I think they were old cake takers at one time, Michele would know, as she installed them. Let common sense be your guide. Battery should be accessible only from the outside, through a small access door. That is why I suggested a mechanics mirror and a turkey baster. Just remember to flush your tools well with water after every use and don't get acid on your cloths.