RambleOnNW
Pacific Northwest
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Joined: 08/06/2010
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Good Sam RV Club Member
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I had been running Mobil 1 5W-20 Extended Performance and occasionally getting an oil analysis over a period of 10 years. Copper wear had been running higher, 8/10/10 ppm for 4100/4300/3750 mile oil change intervals. Universal average is 3ppm for 4400 mile interval.
The last test in ‘22 I ran 5 qts. 5w-20 EP and 1 qt. 0W-40. Copper wear dropped to 6 ppm on a 4600 mile change interval. But we had been taking it out more often too so it was sitting for shorter periods of time so perhaps less top-end start-up wear.
cST viscosity has increased too from 8.0 to 9.92 just out of the top end of the 5W-20 range of 6.0 - 9.7.
So I’m now running what ‘appeared’ to help, 5 qts. 5w-20 EP and 1 Qt. 0W-40 with a Napa Platinum filter. The platinum filter has full synthetic media.
One car works well with 0W-40 instead of 5w-30 (0W-40 is thinner now, Cst dropped from old oil 12.7 to 11.3) so I have plenty of that and use it for top up here and a 0W-20 car.
Could try 5W-30 synthetic but would have 4 quarts sitting around for up to 18 months. Easier to use 5W-20 5 Qt. jug and add a qt. of 0W-40.
* This post was
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edited 07/31/23 04:49pm by RambleOnNW *
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2006 Jayco 28', E450 6.8L V10, Bilstein HDs,
Roadmaster Anti-Sway Bars, Blue Ox TigerTrak
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Grit dog
Black Diamond, WA
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Joined: 05/06/2013
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Or for the OP, just change the oil when ya should.
The engine internals will outlast the rest of the rig and if they don’t, there’s a 99% chance it’s not due to the oil.
Virtually anything more than routine standard maintenance is a myth or someone with too much time on their hands. Like mixing brands and weights for the “right” concoction.
* This post was
edited 07/31/23 08:43am by Grit dog *
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold
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DaCarmack
Lake Isabella
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Joined: 06/09/2005
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Before I came into possession of this motorhome I believe it ran Ford brand of semi-synthetic. Since I've had it I ran Mobil 1 synthetic through it once. I have now run Chevron Havoline DS full synthetic In the six quart box they sell at Walmart. 5W20 and one 0w20. I run the motorcraft filters because they usually have them at Walmart. Buying the five quart jugs and one extra quart to get six, it is cheaper to get the cardboard box by a long shot. With Fords unfortunately having idiot gauges I can't tell you if it runs any better oil pressure or not.just that it seems to not say check gauges when I first started after it sits for a long time since I've switched over to the 0w20. No I don't need that but I like it anyway
2005 Coachmen Concord 275ds
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