I am due for an oil change, and by tommorrow I will make a decision to keep running Pennzoil Platinum and change at 9000 mile/6 month intervals, with a high quality oil filter, or switch to 1 year intervals with Amsoil (unsure if ASL or new 0w30) with their new EA oil filter. I want everyones opinion, with reasons for decision. Im not worried about warranty with my 2008 silverado.(6000 Vortec) I got to admit, while I trust pennzoil platinum with all the UOA's I see, when the sap boils down to the sugar... I see amsoil does have better specs (ie, better HTHS, NOACK. pour point etc.) Feel free to chime in everybody! This is why I joined this forum!
Just as a side note, I do have an aftermarket computer tuner, and I see Amsoil recommends shorter intervals on their website when using these. Is it the heat they are worried about?
Just as a side note, I do have an aftermarket computer tuner, and I see Amsoil recommends shorter intervals on their website when using these. Is it the heat they are worried about?