Is the lack of analysis on stationary engines a factor of short run times?

Caterpillar has a super aggressive program of analysis that helps them keep 
machines running for way longer than ever before and lowers maintenance costs 
by allowing fluids to run longer. If I had an engine with a sump that held 100 
gallons you bet I'd want to get all I could out of that oil, changing it early 
would be crazy talk compared to running a $20 analysis...

I find it interesting that the "Mercedes Martha Stewart" doesn't care about 
whats going on INSIDE the engine. My cars get the opposite treatment, I don't 
really mind what they look like, they have to perform. Then again I drive like 
4x as much as you do.


 From: Dan Penoff via Mercedes <>
To: Mercedes List <> 
Sent: Wednesday, July 16, 2014 5:28 PM
Subject: Re: [MBZ] Mobil 1 $23 at Wally World

I am changing about every 5k-6k and I'm perfectly happy with that.  If the oil 
hasn't "broken in" (and I would like to see the citations for these claims) by 
then it's not going to.

For almost 25 years I worked with industrial diesels with 1000s of HP that had 
sumps well beyond 100 gallons.  Almost every one of them was changed on a 
calendar basis, only a few were changed based on oil analysis.  I'm not saying 
there's anything wrong with oil analysis, in fact, when done properly it can 
provide a wealth of information about the engine.  In the stationary engine 
business, about the only people who do oil analysis are those who have an 
aggressive maintenance program that pays close attention to everything, and/or 
those running engines in prime power (continuous) operation.  Everyone else 
does it every two years or so.

Quite frankly, I don't care to do it and I don't want the additional hassle and 
expense.  I'll just change mine on the intervals I'm happy with and continue 
on.  And yes, we could argue that I would save money in the long run, but I'm 
not that interested in doing so.  I'm just more comfortable with changing the 
oil and filter out at the mileage or time I think is appropriate.


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