Quaker State Defy High Mileage 5W30 Motor Oil, 1 qt

I usually run pennzoil high mileage in my 16 year old truck that has over 160k miles, but I wanted to give quaker state a try since they're also under the SOPUS umbrella and a little cheaper. I currently have about 500 miles on this oil change and I honestly can't tell the difference as my truck still runs just as smooth.

Since I have not been able to find Quaker State Defy I have been using this oil in my 2001 Wrangler 4.0 with 131,000 mi and my son's 1997 Civic with 197,000 mi. Can't seem to tell any difference. Both vehicles run great and neither use any oil between 3000 mi oil changes.

I like QS HM Synthetic Blend formally knows as QS Defy however I question the products advertising as "boosted zinc levels" or "Zinc is king" since it is an SN rated oil. SN governs zinc levels to be no more than 800 ppm. I wonder is QS technical support would respond with some information about this?

I've been running this for a very long time in my Toyota 3.0 truck I have turned 300000 miles and decided to do a rebuild. When I tore the engine down it was as clean as if it just had 30000 miles on it I'm a beleaver in it. It's had also slowed oil consumption to nearly none

I have a 1998 Honda CR-V all wheel drive that has 260,000 miles on it. I have been using Quaker State High Millage motor oil every 3,000 miles. I seriously doubt that if it wasn't for Quaker State High Millage synthetic motor oil blend the engine would not have made it this long. I wouldn't trade my '98 CR-V for a another one half it's age because I know what's been going inside this one.