my 1999 v6 stang is nearing 88k miles. got an oil change about 5k miles ago and i want to know what is best for the higher miles and mainly performance wise. 5w30.... is royal purple the best for performance? what do yall use? what about synthetic?

 

i have always run synthetic, in all my vehicles. and read the owners manual, i think it says 5w30...but just use what ever weight it tells you too.
good luck

 

My '02 manual says 5w20.

 

mine says 5w30

edit: you have a gt, i have a v6

 

I run 10W-30 Royal Purple. Amsoil, Redline and Royal Purple are the premium synthetics out there. Mobile 1 is also pretty good.

http://www.redlineoil.com/products_m...3&synthFlash=1

http://www.royalpurple.com/techa/whyrpa.html

http://www.amsoil.com

 

amsoil is really good

 

i run mobil 1 and like it but im going to try royal purple next time and see how that goes

 

I have ran mobil 1 in my cars for over 20 years..not 1 oil failure

 

I have also run Mobil 1 in many cars with excellent results. Took the head off a T-Bird Turbo to do a little work with the cam and valve springs and that engine looked spotless, just like new. Always ran Mobil 1 in that baby. If you are interested in a pretty good price on Royal Purple, Pep Boys now carries it at $5.99 a quart. Not bad since Mobil 1's new retail price is now $5.29 in the same store. Pep Boys does run specials on Mobil 1 alot at $3.99 a quart with a maximum of 12 quarts allowed at one time. Bottom line: ALL synthetics will do a much better overall job for you than conventional oils. Higher rpm's, more HP, longer drain intervals, zero sludging of any kind, better hot and cold weather running....pours like it's July at almost -50 degrees in the winter.

 

Yeah, Mobil 1 is the bottom of the food chain regarding synthetic oils, but still better than dino oils. I use Redline oils and their filters.