Report of the Month
Aug 2020
Tohatsu 4-stroke engine
Aug 2020
IO-360 in a Piper Arrow
Aug 2019
2001 Mustang 4.6L V8
Aug 2019
Cummins ISX 15 engine
Aug 2019
1976 Honda CB550 motorcycle engine
Aug 2019
Continental TSIO-550
Aug 2019
IO-360
Feb 2019
2018 Kia 2.0L 4-cyl. engine
Feb 2019
Austro AE300
July 2018
2004 Porsche Boxster, 3.2L H6 engine
July 2018
2002 Toyota Avalon, 3.0L V6 engine
July 2018
Cessna 182, O-470 engine
July 2018
Bellanca, IO-520 engine
Aug 2017
2003 Mustang, 4.6L V8 engine
Aug 2017
Cessna 172D, O-300 engine
Feb 2017
Yamaha YZF-R6 enigne
Feb 2017
1945 Pratt & Whitney R2800 engine
July 2016
2000 Wrangler, 4.0L I-6 engine
Feb 2016
Beechcraft, IO-520-BA engine
Aug 2015
2008 F350, 6.4L V8 engine
Jul 2014
Avions Mudry, AEIO-360 engine
Feb 2015
2000 Honda S2000, FA20 engine
Feb 2015
Cessna 421C, GTSIO-520-N engine
July 2014
2007 Expedition 5.4L V8 engine
June 2014
Piper Lance II, IO-540 engine
Mar 2013
2004 F150, 5.4L V8 engine
Mar 2013
Cessna C175, GO-300 engine
Oct 2013
Piper PA24, IO-540 engine
July 2013
2005 Subaru STi, EJ25 engine
July 2013
Cessna T182, TIO-540 engine
Oct 2012
2006 F250, 6.0L Powerstroke engine
Oct 2012
Piper PA24, O-540 engine
June 2012
A pair of Beechcraft B58, IO-520 engines
Gas/Diesel
Aug 2020
The Lower Unit Blues
April 2020
Four Reports of the Month!
Mar 2020
How Big is this Problem?
Aug 2019
This Ain't Your Daddy's ATF
Feb 2019
Do I Need to Worry?
July 2018
How Often Should I Sample?
Feb 2018
Four Reports, Four Problems
Aug 2017
Which Oil is Best?
Aug 2017
Why are Viscosities Going Down?
July 2016
Better Mileage with Synthetic?
Feb 2016
Four Reports of the Month!
July 2015
Is it a Problem or Not?
Feb 2015
FAQ Roundup
June 2014
Does Oil Brand Matter?
Feb 2014
The Fine Art of Comments
Oct 2013
The Renuzit Experiment
July 2013
How Often Should I Change My Oil?
Mar 2013
Magnetic Drain Plugs
Oct 2012
The eBay Oils, Part 3
June 2012
The eBay Oils, Part 2
Apr 2012
The eBay Oils, Part 1
July 2011
Fuel in Gas Engines
Oct 2011
Fuel in Diesels
Mar 2011
On Towing
Nov 2010
ZDDWhat?
July 2010
Rebuilding a GM 350 engine
Apr 2010
To All the Oils I've Loved Before
Oct 2009
What We Meant Was...
July 2008
Transmission Translation
Mar 2008
Sam Slade
Dec 2007
About Additives
July 2007
Oil Change Intervals
June 2006
BioDiesel
Feb 2006
The Flim Flam Man
Aug 2005
Space Dust
Apr 2005
Spotlight on Transmissions
Sept 2004
Avoiding the Landslide
May 2004
Filter Analysis
Jan 2004
The Nature of Oil
Oct 2003
Insolubles
July 2003
Viscosity
Feb 2003
Oil Brands
Aircraft
Aug 2020
Finishing the RV-12!
April 2020
Four Aircraft Reports!
Mar 2020
How Big is this Problem?
Aug 2019
Building an RV-12
Feb 2019
Do I Need to Worry?
July 2018
How Often Should I Sample?
Feb 2018
Four Aircraft Problems
Aug 2017
Which Oil is Best?
Feb 2017
Looking Ahead
Aug 2016
Inheriting an RV-12
Feb 2016
Four Reports of the Month!
Aug 2015
Is it a Problem or Not?
Feb 2015
Building the RV-12
July 2014
Lessons from Lycoming & Continental
Feb 2014
The Fine Art of Comments
July 2013
How Often Should I Change My Oil?
July 2012
All About Insolubles
Apr 2012
The Acidity Question
July 2011
Shaking...in More Ways than One
Mar 2011
EGT Myths Debunked
Nov 2010
What Will Replace 100LL?
July 2010
Critical Component Failures
Oct 2009
Thermo Cube Pre-Heat Control
Mar 2009
Flight Training in the Old Days
July 2008
Making Your Own Engine Dehumidifier
Mar 2008
How to Inspect Your Oil Filter
Dec 2007
Aircraft Additives
July 2007
Oil Change Intervals
Feb 2006
Aircraft Cylinders
Aug 2005
Corrosion
Industrial
July 2011
July Newsletter
Aug 2005
August Newsletter
Apr 2005
April Newsletter
Jan 2005
January Newsletter
Sept 2004
September Newsletter
May 2004
May Newsletter
Jan 2004
January Newsletter
Oct 2003
October Newsletter
July 2003
July Newsletter
