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Old 02-22-2019, 06:37 PM   #1
BT2 Zeke's Avatar
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V-10 Questions

I'm thinking of buying a 2009 Thor Four Winds 25C. It has the Ford V-10 engine. I also have a 2006 F150 with the three valve 5.4 V8. My questions are:

Is the 2009 V-10 a three valve? Does it need the Ford check valve oil filter? How hard is it to change the oil yourself? Does the V-10 need the spark plugs changed every 50K miles? Does V-10 suffer from the key phasor issues?

Thanks in advance for your help.

BT2 Zeke
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Old 02-22-2019, 08:07 PM   #2
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The class C uses 2 valve heads. No room for 3 valve heads in the E350, 450 chassis.

Spark plug change at 90,000 miles.

No Cam Phasor on V 10s.

Oil change very simple.
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Old 02-22-2019, 11:03 PM   #3
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As twin boat states , no cam phasers it's a 2 valve, very very reliable, only use motorcraft filters and oil I believe 5/20. The v10 is probably the best truck engine Ford has EVER made
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Old 02-23-2019, 06:03 AM   #4
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We have a 2015 Thor ACE on a F-53 with V-10 and a 2004 F-150 with 4.6 V8 so very similar to what you have. Truck and MH both use the same oil and oil filter, I use all Motorcraft and buy at WalMart or similar are quite reasonable in price. One thing I have done that makes oil changes easier is installing a Fumoto valve on both. Jim.
2015 A. C. E. 30.1
2004 F-150 Heritage
2004 Harley-Davidson Softtail Springer FXSTS
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Old 02-23-2019, 08:26 AM   #5
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I use Motorcraft oil filters and Motorcraft synthetic blend oil in my V10. Oil changes are easy to do yourself.
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Old 02-23-2019, 08:30 AM   #6
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Replacing the oil drain plug with a Fumoto valve makes oil changes even easier and far less massy.
2014 Itasca Sunova 33C, 2019 Jeep Cherokee Lattitude Plus toad, Demco tow bar, SMI braking system. 20 yr USAF ret.
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