Good afternoon guys,
Here's my latest UOA using the newest PYB 5W-30. Oil in car from May 9-Sept. 20. Temperature range 50-115F. 90% highway driving Tucson-Phoenix.
I like the TBN retention, but noted the insolubles were up a tick to .4%, as well as the viscosity thickening a tad, so I probably won't try to stretch the next interval any further. I switched to PP, but I really want to try the GF-5 Chevron dino when I can find it to finally decide between PYB or Chevron.
So bring on the comments!
Gary
Here's my latest UOA using the newest PYB 5W-30. Oil in car from May 9-Sept. 20. Temperature range 50-115F. 90% highway driving Tucson-Phoenix.
I like the TBN retention, but noted the insolubles were up a tick to .4%, as well as the viscosity thickening a tad, so I probably won't try to stretch the next interval any further. I switched to PP, but I really want to try the GF-5 Chevron dino when I can find it to finally decide between PYB or Chevron.
So bring on the comments!
Gary
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