Author Topic: Yearly oil analysis  (Read 4704 times)

Offline bobofthenorth

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    • R.J.(Bob) Evans
Re: Yearly oil analysis
« Reply #15 on: June 08, 2008, 01:13:15 PM »
I think if the engine sits for long periods and doesn't get thoroughly warmed up to boil off any condensation then more frequent drain intervals would be warranted.  The other problem with sampling is it doesn't tell you anything until after the fact.  Getting an email response is great but - if the response says you have glycol in the oil and you have put 1000 miles on since you pulled the sample then its probably already too late.  Oil sampling is just part of a good PM program - its not an end to itself.
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Offline Barn Owl

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Re: Yearly oil analysis
« Reply #16 on: June 10, 2008, 10:30:39 PM »
 
Quote
I installed a Hayden transcooler with thermostatically controlled fan on the side of the transmission.


I was thinking about doing that, but if I keep on getting good samples back then I might get to skip that step.

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if the response says you have glycol in the oil and you have put 1000 miles on since you pulled the sample then its probably already too late

The local Caterpillar lab I use is in town and they have less than a 24hr turn around time. The kits I am using were 12 for $120. That included the postage, lab cost, and bottles. Six years of sampling for me.
L. Christley - W3EYE Amateur Extra
Blue Ridge Mountains, S.W. Virginia
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Offline edroelle

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Re: Yearly oil analysis
« Reply #17 on: June 11, 2008, 10:25:10 AM »
I change oil on a regular basis, but still take oil samples.   I do not use the sampling to tell me when to change oil, but rather, to see if anything is going wrong. 

One time, the analysis was showing higher silicon.  The testing facility said that there was a problem with the air filtering.  Sure enough, an air inlet connection had a very small gap in it.  The analysis can also tell if you if a bearing is deteriorating or if you have fuel dilusion.

By watching your numbers over time, you can see changes and you may prevent an engine failure.   Low cost, low hassle, good insurance.


Ed Roelle
Flint, MI