Ask an expert

Good morning just wondering why my lift up at the back of my van is not staying up it sounds like the hydraulics are not working and we have to hold the door up it just happened so just wondering what to do? also is it ok to swap 95 to 91 as it is getting really expensive to fill I have had my car for 8 years and use the van more as it takes 91 cheaper to run round town with thank you. :)

This simply sounds like the gas struts are leaking. Sometimes they can be repaired - very often by mobile services, so depending on where you are located, just google "gas strut repairs" and there's likely to be someone in your area.
Depending on what type of vehicle you have, if it's designed to run on 95, you shouldn't change to 91. Also, even though 91 is cheaper, the vehicle won't return such good fuel economy on 91 if it should be run on 95, so there won't be any real saving.