So this is what your engine will look like if you just go to Jiffy lube every 5k miles for 100k/8 years:
This is 99k miles of Jiffy lube standard changes every 5k, then a 6k run with PP 10w-30. 105k total. We took off the rocker cover today to try to deal with unusual oil use/PCV valve nonsense on this car. The tiny debris visible fell in from the intake manifold; my dad was working with me and he's impatient and took off the cover once loosened before I cleaned above it. Hx is that my mom was "issued" this car new in 2007 as a company car. She drove it mostly long highway miles for 3 years/60k miles as regional manager for a large Fortune 500 company. When they replaced in 2010/2011 with a Toyota Rav4 (horrible car to be honest, and I'm a Toyota fan), my parents bought the car from PHH as they thought it was worth the depreciated value. They continued 3k to 5k OCI's at the same Jiffy Lube from 2010 to 2015 from 60k to 99k, though it was the short-tripped excessively since then vs. the previous highway miles.
I am a fan of synthetic but this is hard to argue with. It had no real maintenance other than oil change a few years so last spring I did the brake, AT, and oil (PP 10w-30) and this is one year/5,700 miles later after 8 straight years of Jiffy Lube. The PP came out black as sin so it did some great cleaning. The oil in it is M1 with less than 500 miles. So clearly they are cleaning, but not enough to account entirely for this condition.
And if anyone can figure out what the cra(p)tastic Chevy dealer did to butcher the PCV/evap system the thread is here:
Cra(p)tastic Chevrolet dealer service
This is 99k miles of Jiffy lube standard changes every 5k, then a 6k run with PP 10w-30. 105k total. We took off the rocker cover today to try to deal with unusual oil use/PCV valve nonsense on this car. The tiny debris visible fell in from the intake manifold; my dad was working with me and he's impatient and took off the cover once loosened before I cleaned above it. Hx is that my mom was "issued" this car new in 2007 as a company car. She drove it mostly long highway miles for 3 years/60k miles as regional manager for a large Fortune 500 company. When they replaced in 2010/2011 with a Toyota Rav4 (horrible car to be honest, and I'm a Toyota fan), my parents bought the car from PHH as they thought it was worth the depreciated value. They continued 3k to 5k OCI's at the same Jiffy Lube from 2010 to 2015 from 60k to 99k, though it was the short-tripped excessively since then vs. the previous highway miles.
I am a fan of synthetic but this is hard to argue with. It had no real maintenance other than oil change a few years so last spring I did the brake, AT, and oil (PP 10w-30) and this is one year/5,700 miles later after 8 straight years of Jiffy Lube. The PP came out black as sin so it did some great cleaning. The oil in it is M1 with less than 500 miles. So clearly they are cleaning, but not enough to account entirely for this condition.
And if anyone can figure out what the cra(p)tastic Chevy dealer did to butcher the PCV/evap system the thread is here:
Cra(p)tastic Chevrolet dealer service