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Old 11-05-2021, 02:54 PM   #15
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That consumption is well within specs.

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Old 11-05-2021, 06:46 PM   #16
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Lubricated valve guides is a good thing.

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Old 11-08-2021, 12:39 AM   #17
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All input very much appreciated. Helpful as always. I will monitor the oil consumption closely. And will start playing around with different types of oil (5w-30 hc-synt at present/ but coach will stay in the south of spain, 10w-30 an option). I also like the idea of an oil trap after the pcv.
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Old 11-10-2021, 08:32 PM   #18
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Originally Posted by Ruediger View Post
I was mixing metrics. Its now about 0.6 litres per 1000 km/ 650 miles. And im driving carefully. The question, what next besides monitoring: any limit from there i need to do the valve seals to be replaced? Anybody here in the forum who did this? Im worried about cat to be ruined with two much oil to be burned.
You can change the valve seals without removing the heads. You will need a compression tester with a air hose connector to pressurize the cylinder to hold the valves in place. Also you will need a valve spring tool to remove the valve springs and keepers. You just need to be careful removing the keepers so you don't drop one in the engine. I use a magnet to remove the keepers so I don't drop them. Hope this helps.
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Old 11-23-2021, 09:41 AM   #19
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Great idea!

Originally Posted by donr103 View Post
you basically have a Chevy c2500 / c3500 Chevy pickup bolted to big frame with house on it.. so go online and get a repair book for Chevy c2500 same yr as your rv.. you are going to need it.. it's will have trouble shooting guide and engine specs..

Now that sir, is an excellent idea. I am going to get a Chevy manual today.
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Old 11-23-2021, 05:47 PM   #20
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We had two motorhomes on the P30 chassis with the 454 cid engine. 0.6L in 1000 kM is not really excessive oil usage for those old big block engines. I would not worry about it unless you are getting oil fouling on the plugs, or you see some blue-gray smoke when you let off the throttle.

They burn a little oil to keep the cylinders lubricated. If you are getting smoke on deceleration, it may be the valve stem seals need replacing. This is not bad job to fix.

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454, ace, replace

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