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Old 06-20-2013, 06:14 PM   #29
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At 60,000 miles I use about a half quart every 3,000 to 4,000 miles or so.

Mobil 1 Synthetic 10/30.
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Old 06-20-2013, 06:19 PM   #30
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Originally Posted by oemtech View Post
Pretty common with 8.1's that use 1qt oil per tank of gas.
Pretty heavy oil consumption. That definitely looks like ash deposit from burning oil to me, perhaps the crankcase was overfilled?

BTW, I recently changed my oil with Amsoil Signature and after 600 miles haven't detected any usage on the dipstick.
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Old 06-20-2013, 06:27 PM   #31
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I will admit reading all different spark plugs is not my best skill, however due to curiosity I decided to google it. I did find this that may be a good indicator of those plugs.


This plug has ash deposits which are light brownish deposits that are encrusted to the ground and/or center electrode. This situation is caused by the type of oil used and adding a fuel additive. This condition will cause a misfire. This can be also caused by changing oils in midstream.

Im not sure what is meant by changing oils in midstream though.
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Old 06-21-2013, 08:26 PM   #32
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And to think I thought a quart in 1200 miles acceptable.
After the first oil change I did it went to a quart in 2000 miles.
No complaints.
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Old 06-22-2013, 05:55 AM   #33
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My theory is that plugs, fuel and air filters, etc., should be changed based more of fuel used than miles driven in a motor home. The plugs in a motor home that gets 7 mpg fires much more fule than the same plugs in a car that gets 25 mpg. I changed my plugs at about 50k and they didn't look too bad, but were ready to change. I use Taylor Wires and gapped my plugs at .045" per Brazel's instructions that came with my Ultrapower.

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This is a theory but all gasoline engines run on the same air fuel ratio. The diferance is the heavier and less arodynamic a vehicle is the further you have to push on the accelorator to keep it going at a given speed so more air means more fuel. On a gas engine the accelorator controls the amount of air going into the engine and the carb. or ECM controls the fuel delivery. On a diesel engine the accelorator controls the amount of fuel and the air intake is open all the time.
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Old 06-26-2013, 10:24 AM   #34
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after buying the coach 3 yrs ago with 34K miles, I went in & changed the plugs & plug wires--plugs had plenty of deposits on them--coach ran fine when changed--cheap insurance IMO..now I run fuel system cleaner a couple of times a season, usually Lucas...
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Old 06-26-2013, 10:45 PM   #35
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IRV4FUN,

That's good news. The Workhorse tech at the Workhorse Chassis Motorhome Club Rally in Ohio a couple of years ago recommended Techron once a year. He didn't bad mouth any other additives, but said he knew from experience that Techron worked. This will be my third summer of using it.

Thanks,
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Old 06-27-2013, 10:18 AM   #36
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Like the old saying goes, if it aint broke, don't fix it, The techron thing once a year is good, only thing its doing is cleaning off any carbon build up in the valve train, any uper cylinder cleaner will work!
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Old 06-27-2013, 10:26 AM   #37
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IRV4FUN,

That's good news. The Workhorse tech at the Workhorse Chassis Motorhome Club Rally in Ohio a couple of years ago recommended Techron once a year. He didn't bad mouth any other additives, but said he knew from experience that Techron worked. This will be my third summer of using it.

Thanks,
Dave
Ford also recommended that additive a while back. That was the only one that I recall. It was to help reduce build up from the fuel additives on the fuel level sender. The additives in the fuels were causing the senders to read erratically. Techron every now and then kept the cards clean.
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