Any comments on Per'tua oil additive?

[altec]

yup, met jun simon looong time ago. did he show you the psi testing machine where you put some additive and compress the metal to see at what psi it chokes up? We tried that on our fleet of cars, trucks, and forklifts. With the forklifts especially, we have a scheduled change oil every 200 hours, as recommended by petron. What we did was conduct an oil test at 200 hours, and 300 hours. Sabi kasi ng petron noon (when we exclusively get the diesel and bunker fuel from them), free ang lab testing ng oil nila. This time, we didn't tell them that the oil we were testing contained additive. At 300 hours, they recommended that the oil is still good to be used, no oil change needed, although there was 1 forklift unit that had deteriorated oil quality, but we concluded it was because the engine was about to go on overhaul.
Also applied it on my 89 16V corolla. Using Petron mineral based multigrade, I normally change oil every 5K, noticing thicker viscosity when you check the oil driping from the dipstick. Then on succeeding oil change, had pertua in, checked it UP TO 10K, the oil still dripped well! Eventually changed oil at 12K. But on succeeding, maintained it at 10K. But that was long time ago, wala na ang 16V ko, binili ng junk shop after I totalled it one day.

THAT WAS THEN. When our motorpool made a comment one day that pertua didn't look and feel the same, we decided to stop using (partly also when their supplier had some theft issue with mr simon's agent). One day, another supplier using the same equipment, showed up. We conducted several on the spot tests, including an old bottle of pertua we had on stock. Tama nga suspecha namin, it's not the same!! Don't think it was a fake, kasi we still got it from the local supplier. Bottom line is that maybe mr simon succumbed to the pressure of his own success and diluted or changed his formula. Pertua is still around in our place, but we won't touch it anymore.