Recent oil Change problems advice.

[worldwide73]

Okay so I changed my oil from brand X to a better oil Y. Truck ran a little rough and showed some injector stiction with brand X and HSS. So its time for brand Y and I added some REV-X to help out with stiction. Well now the stiction is way worse, wont' hardly move until the EOT is around 120 degrees, and before would move any time.


Insight shows FICM voltage at 48v always and i checked the ICP pressure and it looks good. So what gives? Both oils are full synthetic, 5w40, use OEM filters, BYPASS filters, etc.. didn't change anything else. Also thinking it may be my tune I've put the truck back to stock and it runs worse than ever before.

So without revealing name brands I'd like to know your advice...

Should I drain out $150 worth of oil and put brand X back in there? I'm kind of frustrated now hoping for better results from the supposed better brand Y.

Thanks for any help or advice.