Hi folks,

I'm back, I changed the spin-on and primary fuel filters, I even filled them up with purge fluid, but the problem persists.
As I have mentioned my lack of power problem came about after I drove my car on the freeway last week for 20mins at 70-80mph.
Could it be because of me adding the fuel additive on 1/3 full tank, I do not see any fuel leaks either, what could the problem be?
Any other suggestions?

Thank you all again.
John