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April 2021 Issue
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Features
Check the Label Before Replacing A/C Refrigerant
How Speed, Load and Slip Affect Voltages
How Extended Interval Oil Filters Have Been Improved
March 2021
February 2021
January 2021
Magazine Archive
Engine
Internal Engine
External Engine
Electronic
How Speed, Load and Slip Affect Voltages
By
Andrew Markel
on
Apr 29, 2021
How Extended Interval Oil Filters Have Been Improved
By
Andrew Markel
on
Apr 28, 2021
Five Spark Plug Service And Replacement Tips
By
Andrew Markel
on
Apr 23, 2021
Heating / Cooling
Engine Compartment
Passenger Compartment
Check the Label Before Replacing A/C Refrigerant
By
Underhood Service Staff Writers
on
May 5, 2021
A History Of Automatic Temperature Control
By
Joe Keene
on
Mar 23, 2021
Cavitation: Killer Of Water Pumps
By
Andrew Markel
on
Jan 22, 2021
Diagnostics
AAPEX 2021 Announces Repair Shop HQ Training Schedule
By
Underhood Service Staff Writers
on
Apr 28, 2021
Power Steering Pump Noise After Replacement
By
Underhood Service Staff Writers
on
Apr 9, 2021
Do You Know The Cause Of A No-Spark Condition?
By
Andrew Markel
on
Mar 31, 2021
Emerging
Electronic
Hybrid
Diesel
The Best Way To Secure A Digital Customer Journey
By
Kjetl Faye Lund
on
Apr 28, 2021
EV Conversions For Classic Cars
By
Brendan Baker
on
Mar 9, 2021
Caring For AGM And Flooded Batteries
By
Brendan Baker
on
Dec 22, 2020
Video
VIDEO: Your Customers' Cars Need Regular Attention
By
Doug Kaufman
on
May 4, 2021
VIDEO: Staying In Your Prime During Oil Change Time
By
Joe Keene
on
Apr 23, 2021
VIDEO: Oil Pressure Light Information
By
Joe Keene
on
Apr 21, 2021
Check the Label Before Replacing A/C Refrigerant
Interstate All Battery Partners With Operation Homefront
Registration Opens For 2021 MACS Trade Show
VIDEO: Your Customers’ Cars Need Regular Attention
Understanding How Rental Car Insurance Impacts Your Shop
Engine
How Speed, Load and Slip Affect Voltages
Engine
How Extended Interval Oil Filters Have Been Improved
Engine
Five Spark Plug Service And Replacement Tips
Engine
The Importance of Clean, Quality Oil in Timing Chain Systems
Engine
Tool Talk: You Have Boxes Full Of Precious Metals
Engine
Increase And Retain Car Count With Membership Plan
By Jordon Comstock
Apr 9, 2021
Engine
Simple Engine Fasteners Actually Complex Engineering Systems
By Greg Jones
Apr 2, 2021
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Engine
Clearing Up Import Coolant Confusion
By Andrew Markel
Apr 2, 2021
Engine
Honda Electronic Throttle Body Service Tips
By Underhood Service Staff Writers
Mar 31, 2021
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Engine
Aging Plastic Intake Components May Cause Leaks
By Brendan Baker
Mar 25, 2021
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