Im using Redline coolant..Castrol GTX oil..On my Gauge i dont see my T-meter going red line but i see a burnt white smoke coming out of my engine..Also my engine got kind of weaker RPM revv lower..I saw my radiator and it was pure black look burnt..My cars hundred thousand mile its mostly all stock..How much to rebuild your engine..price and where can i get help from..im from LA area..Help would be great..Thank you..