Dan Holdmeyer
Dan Holdmeyer is retired from Chevron Lubricants and is based in Washington, Mo. You can reach him at dan.holdmeyer@gmail.com.
Articles
Back to basics: Learn about unique gear design in machinery
These common gearset designs all have unique characteristics and are used in various applications.
Additives and engine oil lubrication
Engine oils contain a complex blend of additives to minimize emission and aid efficiency.
Used oil analysis fundamentals
A quality oil analysis program with a series of consistently timed samples is key to successful preventive maintenance.
Crude oil to base stocks to base oils to lubricating oils
The refining process has improved throughout the history of crude oil use, with base stock quality continuing to benefit from new technology.
The basics of lubricant water contamination
Steps taken after water contamination is identified depend on the type of lubrication product and its intended use.
Air entrainment, aeration, cavitation and foaming: How are they related?
There are many causes and solutions to this foaming issue
Regrease properly to improve bearing life
A simple equation and a checklist of important considerations can help to optimize the greasing of bearings.
Fluid sampling best practices
This can derail the best fluid analysis program and cause severe maintenance issues for companies.