AboutDennis W Expertise I am a retired Ford master tech specializing in electrical, climate control, emissions, driveability, chassis, brakes, and any light repairs. Currently employed by an independent shop that appreciates my knowledge and abilities.
Cannot answer transmission or parts questions, these are not areas of my expertise.
Experience 32 years of auto repair, diagnosis, and emissions testing, in service staions, independent garages, and 20 years with Ford dealers.
Organizations National Street Rod Association (NSRA)
International Automotive Technicians Network (IATN)
www.blueovaltechs.com
IAMAW (retired)
National Street Rod Association
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Education/Credentials Riverside City College Automotive technology program
Ford Master Tech Certified Engine and Chassis Master (Over 500 hours)
ASE Certified in 7 categories
6 years training in Union 76 Pro-tech program
Awards and Honors 4-time Technician of the Year at Almaden Lincoln Mercury
Ford Master Tech
Union 76 Pro-tech Master tech
Question Due to slow leak & replacing low side schrader valve, the system needs recharging. Do I need to add refrigerant oil to system? If so, what type and how much would you suggest?
Answer Yes, oil should be added. I recommend having the system charged professionally, this is the only way to evacuate the system to remove moisture and contaminents. Charging it yourself it is hard to get the correct amount, and this method will leave plenty of air and moisture in the system that will affect performance.
