2021 Ford 7.3L V8 - E350

BigJohn

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Ummm yeah... that V8 is all it's cracked up to be. And it pulls our little 24 footer with ease. We picked it up this morning and I drove it 100 miles back to the house. The roads were up and down hills, with some decent little pulls and here is the MPG for the full 100 miles....

Oh yeah, when I got home I dumped the factory fill and twisted off the Ford filter.... Pouring in 8.5 quarts of Rotella T5, 10w30 and a Mobil 1 filter. I am going to run it 3,500 miles, dump it and pour T5 back in for the next 5k miles.


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dcd

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Aug 17, 2003
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Chattanooga, TN
You can run what you like but Rotella T5 does not meet your warranty requirement. Your owners manual calls for an SP rated oil. T5 is not rated as SP and has too much phosphorus to get the SP rating. A SP rated 5w30 would be perfect.

View attachment 67776 View attachment 67777

Yeah, I wouldn’t want to risk a warranty issue from use of an incorrect motor oil. If your catalytic converter goes out they could blame it on that.

Also, aren’t the Econolines designed for body off frame major engine work? I don’t even know how that would be done with the RV “attic” over the cab?
 
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Ummm yeah... that V8 is all it's cracked up to be. And it pulls our little 24 footer with ease. We picked it up this morning and I drove it 100 miles back to the house. The roads were up and down hills, with some decent little pulls and here is the MPG for the full 100 miles....




sqdrUoG.jpg

I
Awesome! 13mpg hauling that load, brand new, is pretty darn good!

BigJohn, would you mind telling us approximate pricing on that model? Extremely variable depending on options, but a ballpark figure would be appreciated. My wife and I are considering a lifestyle change in about 2 years.
 

BigJohn

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Awesome! 13mpg hauling that load, brand new, is pretty darn good!

BigJohn, would you mind telling us approximate pricing on that model? Extremely variable depending on options, but a ballpark figure would be appreciated. My wife and I are considering a lifestyle change in about 2 years.

Usually the best pricing in the nation is from RV Wholesalers in Ohio. Their quote was $67k. The kicker is.... They have no units and because of the 'chip shortage', they claim it is 8-10 months from order to delivery. I then spent 3 months searching the whole nation, looking for a Conquest 6237 and couldn't find one anywhere. Last Saturday I decided to call all the Colorado dealers again and BINGO... I found one 100 miles from our house. It's MSRP was $86,000 and it was on sale for $70,200 and we snagged it. That motorhome was never available during my searches and calls, as four different buyers always had it under contract and four times.... financing was declined.

Regarding T5 10w30... Yep I am fully aware of the beautiful amount of ZDDP and an HTHS over 3.5. Intentionally chosen with full awareness. I live in Colorado and will be pulling 10,000 foot passes on regular occasion and will be stressing the engine a lot, pulling a 14' cargo trailer loaded with motorcycles. I'm not interested in the EPA's game of anemic oil to meet their ridiculous standards. If I loose a cat in the first 150k miles... whoop-dee-doo.


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Worried about "little flakes in the oil"? Why not just change the filter and add enough oil to make it "Full" again. Then change the oil and filter after a bit, maybe at 3K miles?
 
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Usually the best pricing in the nation is from RV Wholesalers in Ohio. Their quote was $67k. The kicker is.... They have no units and because of the 'chip shortage', they claim it is 8-10 months from order to delivery. I then spent 3 months searching the whole nation, looking for a Conquest 6237 and couldn't find one anywhere. Last Saturday I decided to call all the Colorado dealers again and BINGO... I found one 100 miles from our house. It's MSRP was $86,000 and it was on sale for $70,200 and we snagged it. That motorhome was never available during my searches and calls, as four different buyers always had it under contract and four times.... financing was declined.

Regarding T5 10w30... Yep I am fully aware of the beautiful amount of ZDDP and an HTHS over 3.5. Intentionally chosen with full awareness. I live in Colorado and will be pulling 10,000 foot passes on regular occasion and will be stressing the engine a lot, pulling a 14' cargo trailer loaded with motorcycles. I'm not interested in the EPA's game of anemic oil to meet their ridiculous standards. If I loose a cat in the first 150k miles... whoop-dee-doo.


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Hey appreciate the info! Glad you found one close to home...and it was only slightly more.

T5 is a good choice IMO, better one in weather over 5°F might be 15w-40 (in Schaeffer variety, of course!)
 

BigJohn

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Worried about "little flakes in the oil"? Why not just change the filter and add enough oil to make it "Full" again. Then change the oil and filter after a bit, maybe at 3K miles?

I never know what the factory fill is, so I dump it for peace of mind on all new vehicles and bikes, usually around 500 miles. This one was driven from the factory to Colorado and had 1,500 on the dial when I bought it, so I promptly dumped it. I will run my current fill and filter to 5k miles and dump and refill again for a 5k run to 10k on the odometer. At that point I will make a decision on my OCI's.... maybe after a Blackstone test. I'm going to have a hard time following Ford's advice for 10k OCI's on this engine. ..... For me, maybe 7,500 mile OCI's???


Hey appreciate the info! Glad you found one close to home...and it was only slightly more.

T5 is a good choice IMO, better one in weather over 5°F might be 15w-40 (in Schaeffer variety, of course!)

Yeah, I have a lot of 15w40 on the shelf, in the flavor of Rotella T6 for my motorcycles, but I think I will stick with a 30wt per Fords recommendation.
 
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