<VV> lube oil contamination

[Jay Maechtlen]

I wouldn't think most applications were that sensitive to very small 
percentages of water.

I suppose it would take some pretty wet conditions to get water into a 
trans or diff. (fording streams?)

Don't trans and differential oils warm up more slowly than engine oil?
On an 80 degree day (for example) , I wonder how much stop-and-go 
driving it takes to bring the trans oil over 212 degrees?
OK, it is mostly academic. But it might be another reason to get out and 
run it once in a while, not just start it, and not just go to the 
grocery store.

Regards
Jay

On 9/12/2014 9:21 PM, MarK Durham wrote:
> Jay, that is true for anything that relies on a lubricant. The good 
> thing is as you drive the cars and warm them up, that gear oil gets 
> hot and the water vaporizes pretty quickly. The trans has a cover on 
> top that has a vent in it for the moisture to leave. Our engines have 
> a harder time with moisture than the trans/diff do because water is a 
> byproduct of combustion that gets past the piston rings as the engine 
> runs. That needs to be vented overboard or recirculated back into the 
> intake, which is what pcv valves do.
>
> Mark Durham
> Hauser, Idaho
> 62 Monza coupe Red/Red 4 speed
>
> On Fri, Sep 12, 2014 at 9:03 PM, Jay Maechtlen via VirtualVairs 
> <virtualvairs at corvair.org <mailto:virtualvairs at corvair.org>> wrote:
>
>     On an engineering forum (eng-tips - Transmission, Driveline,
>     Hybrid Drive engineering Forum
>     <http://www.eng-tips.com/threadminder.cfm?pid=78&page=1>), I saw
>     the following:
>
>     " life of gears and bearings can be shortened exponentially when
>     small amounts of water are present in the lubricant - even 0.1%
>     can reduce the lifespan quite considerably. "
>
>      interesting...
>

-- 
Jay Maechtlen SoCal '61 2-dr modified w/fiberglass skin, transverse 3.8 
Buick V6 TH440T4 trans


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