Re: Synthetic?? or Conventional oil?? how soon??
Did you know when synthetic motor oil came out in the early 70's, Mobil advertised changing the filter every 6000 and top off the oil. At 25,000 miles, change out the oil completely + filter. I have been changing my Mobil 1 every 10K + filter since the early 70's even though I read somewhere on the internet that an independent lab said Mobil 1 did not BEGIN to break down until 15,000 miles. It was also stated that conventional oil does not BEGIN to break down until 6000 miles by same lab. My cars are usually driven 140 to 150K before giving to now grandson or grandaughter and perform the same mpg when bought new. Next will be great great grandchildren. Also, both wife and I are hard on our vehicles. She's usually on 2 wheels cornering! This is my experience with Mobil 1 Synthetic. Happy Motoring!
Bought New Oct 14' - Built July 14', SLT-1, FWD, Navigation, Ziebart Rust Protected, Mobil 1
Silver Club #7, SLT-1 Club #37
Previous: 07 Acadia, 12 Terrain
Volunteer: YWCA County Women's Domestic Violence Shelter w Children, & The Boys and Girls Club [USAF Veteran 63-67]