decisions on what type of oil

[Green&GoldGT]

So I'm gonna be driving back home for thanksgiving (4 hours away) and i need an oil change. but where I'm at right now has just the basic brands of oil. I want a 5w-20 and I was planning on getting Royal Purple or Q full synthetic. But basically my choices are motorcraft and Mobil 1. So should I get one of these or hold off until I get home to get Royal Purple? BTW im planning on getting a dyno tune next week and I was trying to squeeze out every hp.

And another question, one of my idler pulleys is squeeling bad. I had the one next to the alternator changed, and the noise was still there. So I bought a tensioner pulley. Do I need to replace the pulley or the whole tensioner assembly?

Thanks

 

[fobra559]

Wait it out and get the Royal Purple

 

[Zax]

Mobil 1 supersyn is great oil, used it on every stang I own. Purple is nice but I would save the $$$ and gfet the Mobil 1. Lucas is supposed to start selling motor oil by the quart, thats what Im waiting for.

 

[deftsound]

you cant go wrong with mobil 1

 

[40th GT]

you cant go wrong with mobil 1

:Word: Mobil1 ftw.

 

[Mustang5L5]

Too much thought is put into oils. To be honest, when it comes to synthetics, they are all great.

 

[fobra559]

So I'm gonna be driving back home for thanksgiving (4 hours away) and i need an oil change. but where I'm at right now has just the basic brands of oil. I want a 5w-20 and I was planning on getting Royal Purple or Q full synthetic. But basically my choices are motorcraft and Mobil 1. So should I get one of these or hold off until I get home to get Royal Purple? BTW im planning on getting a dyno tune next week and I was trying to squeeze out every hp.

And another question, one of my idler pulleys is squeeling bad. I had the one next to the alternator changed, and the noise was still there. So I bought a tensioner pulley. Do I need to replace the pulley or the whole tensioner assembly?

Thanks

If you trying to sqeeze out every hp you can, I would get the RP. If your more concerned about getting the oil change before the road trip then Mobil 1 is your best bet. Be sure to let us know what the dyno #'s are when you get it done.

 

[Green&GoldGT]

I'll post up dyno numbers. But can anyone answer my second question from the first post?

 

[Zax]

and your sure its the pulley and not the belt?

 

[2000fordstanggt]

nobody remembers how bad RP is? that it thins out at higher temps and ****s up valves. mobile 1 is the only way to go IMHO

 

['13_ImpactBlue_GT]

Got any links??

 

[jivepepper]

I use advance auto oil 5w-30 and a motorcraft oil filter.

 

[2000fordstanggt]

http://www.modularfords.com/forums/f4/oil-forced-induction-85473-3.html
(last post by hardcore)

i never used it again after reading this.

 

[1Phat5Liter]

Royal Purple is overhyped.

I've always used Mobil 1 Full Syn in my Mustangs. Can't go wrong with Mobil 1 or Lucas.

 

[1Phat5Liter]

Lucas is supposed to start selling motor oil by the quart, thats what Im waiting for.

My local PepBoys sells Lucas oil by the quart. For months now actually...

 

[TGJ]

I can get Amsoil for the same price I pay for Mobil 1 which is what I use. I think I am going to try it as it is supposed to be the best oil out there.