Only 5K miles on our 2017 Greyhawk 29ME, but towing a full sized Silverado through the Southwest has been easy. The motor sounds more like a sewing machine than an internal combustion beast. Also never a Ford fan, the V-10 appears to be dialed for the long haul.
I purchased a Scan GaugeII for our 2014 Greyhawk. I primarily wanted it to monitor transmission temperatures. It was very helpful during a trip last year out West. Running through the Mountains I kept an eye on the trans temps and pulled over several times for a cool down.
The Scan gauge does not have the Ford trans temp setting installed. I had to program it in using one of the several hexidecimal settings in the manual. Once that was done it has been great.
I see your last post on this was a year ago, so I hope you're still online with the forum. I just bought a Greyhawk with the V10, and I wonder how much RPM I can push out of the engine. I'm used to seeing color codes on the tach to warn of overspeed, but not on the E450. Is it okay to run it up to 4 or 5k RPM when climbing hills?
Our 24-foot 2002 Tioga had the Ford V-10. I would say it's bulletproof, guzzled gasoline, was not quiet, and is strong. It was not what I would call a "refined" engine.
New versions certainly are more refined.
My 09 screams around 4000 I have read that these engine love to rev and power is in the higher RPMs kind of like the old two stroke bikes I used to ride seem to be pretty tough, using right weight oil supposedly the cam bearing passages are smaller suffer with heavier oil what I read and was told so I always use recommended oil weight, Yes it sucks gas like no tomorrow and so did the ones in pickup trucks
The V10 is a modern OHC engine that is made to run in Upper
RPM range. The 6 speed trans helps keep the revs down but
up hills towing it gets pretty high in rev range.
We did put much more soundproofing lead and rubber
self adhesive sheets
under doghouse which help with sound and heat.
I plan to add another layer next time i service the engine.
I got these at Amazon,