Re: V10 fuel question
I would like to add to the starter relay issue... Under normal driving conditions the relays do have problems. Most vans never have one fail. But, there is certainly a correlation to towing, and going through starter relays. I'm guessing its related to heat-soak, after running the engine hard. My dad's van has never had an issue, but it usually down't tow more than ~6,000 pounds, while I'm pulling 15,000+ regularly.
Crown Vic cop cars are also plagued with short starter-relay life, while civilian Crown Vics don't have the same issue.
2000 E450 dually V10 wagon