In a Falex Load-to-Seizure Test a series of base oils were tested using the same viscosities of base oils. A polyol ester pure base oil of Pentaerythritol failed at 3,400 PSI. Pure mineral oil failed at 22% of the Pentaerythritol, but PAO failed at 253% of the mineral oil. At what PSI did the mineral oil and PAO fail? Rules for the Question of the Day: 1. No Piston Cup Lapel Pin will be awarded to the same person within 14 days of a previous award. 2. Please respond with a complete sentence. 3. Please do not post links. If a question arises as to the need for clarification, then sources and links may be requested. 4. Please, no off topic posts.