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Re: [GMCnet] Engine lubrication [message #355639 is a reply to message #355638]

Sat, 13 June 2020 12:16

James Hupy

Messages: 6806
Registered: May 2010

Karma:

Senior Member

For the application of the slow engine speed ranges that our coaches
operate in, 1800 - 3200 rpm. 20w - 50 is a good call. Need a bit higher
viscosity because of high bearing loads, and large throttle openings at
relatively low rpms. Lots of heat in those piston crowns.
Jim Hupy
Salem, Oregon

On Sat, Jun 13, 2020, 10:03 AM John R. Lebetski via Gmclist <
gmclist@list.gmcnet.org> wrote:

> J.R. If GM says 10W-30 then what is your logic that 20W-50 is “better”?
> Seems it would exasperate the gravity drain back issues. Most builders
> today don’t like heavy oils as they pull less heat from gearings and heat
> kills soft bearings
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
>
>
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[Message index]

		Engine lubrication By: tgeiger on Sat, 13 June 2020 05:35
		Re: Engine lubrication By: 94nubble on Sat, 13 June 2020 06:59
		Re: [GMCnet] Engine lubrication By: powwerjon on Sat, 13 June 2020 06:35
		Re: [GMCnet] Engine lubrication By: 94nubble on Sat, 13 June 2020 07:33
		Re: [GMCnet] Engine lubrication By: jimk on Sat, 13 June 2020 19:51
		Re: Engine lubrication By: jhbridges on Sat, 13 June 2020 07:35
		Re: Engine lubrication By: tgeiger on Sat, 13 June 2020 07:55
		Re: [GMCnet] Engine lubrication By: James Hupy on Sat, 13 June 2020 08:50
		Re: [GMCnet] Engine lubrication By: jimk on Sat, 13 June 2020 09:39
		Re: Engine lubrication By: JohnL455 on Sat, 13 June 2020 12:02
		Re: [GMCnet] Engine lubrication By: James Hupy on Sat, 13 June 2020 12:16
		Re: [GMCnet] Engine lubrication By: jimk on Sat, 13 June 2020 12:57
		Re: Engine lubrication By: rickmike on Tue, 11 August 2020 20:50
		Re: Engine lubrication By: tgeiger on Sat, 13 June 2020 18:04
		Re: Engine lubrication By: JohnL455 on Sat, 13 June 2020 18:34
		Re: Engine lubrication By: Larry on Sat, 13 June 2020 19:14
		Re: [GMCnet] Engine lubrication By: James Hupy on Sat, 13 June 2020 19:47
		Re: Engine lubrication By: Husker92592 on Sat, 20 June 2020 11:10
		Re: Engine lubrication By: Matt Colie on Sat, 20 June 2020 12:17
		Re: Engine lubrication By: Husker92592 on Sun, 21 June 2020 00:46
		Re: Engine lubrication By: Carl S. on Wed, 12 August 2020 21:47
		Re: Engine lubrication By: rickmike on Thu, 13 August 2020 23:45
		Re: [GMCnet] Engine lubrication By: jimk on Sat, 20 June 2020 12:05
		Re: Engine lubrication By: jhbridges on Sat, 20 June 2020 14:03
		Re: Engine lubrication By: roy1 on Fri, 04 December 2020 11:29
		Re: Engine lubrication By: mghamms on Fri, 04 December 2020 11:39
		Re: Engine lubrication By: jhbridges on Wed, 12 August 2020 07:29

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