Re: ZDDP Off Shoot, Oil change interval

[Tom Watters <tomwatters@xxxxxxxxx>]

I always change it Twice a year spring/fall, and after a long trip.  Most of us don't put 6000miles on our cars a year, but like said above,  running our engines adds gas blowby into the oil,  which kills the viscosity over time.   Add the moisture added in from condensation in the winter,  so I change it in the spring just before mopar at the strip.   Then after the hot summer months,  with that heat and today's fast Evap gasoline,  the blowby is probably more,  so it gets a change on labor day weekend. 

This year I also changed it in July after a 1500 mile round trip into Utah,  and earlier this month on the car's 50th birthday. 

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