frststang

ive had my 03 cobra for about a month now and id like to give it an oil change and change out the plugs for the fact that i dont know what it has on it now my car has 66k and id like to know what kind of oil i should use 5/30 10/30 i mean im lost here with the miles and all any help will be great also what are the best plugs to run cars mostly stock besides long headers and kn filter...

antiv6

5w20 oil. I run synthetic mobile 1. For the plugs you could get tr6's but if its stock just buy the stock plugs. You can find out what you need at advance autoparts, if you walk in they will tell you what your stock plugs are on the computer.

Timspony

I run the Mobil 1 5w30...with a K&N filter....I also use the NGK TR6 plugs gapped at 0.032

Martel

Royal Purple 5w20.

frststang

thanks

Ehmark

Make sure to use that anti seeze plug goop and change them plugs before you warm up the engine at all, so its a morning or late night job. Many people strip the threads, of course thats usually 2v guys.

67fire

I run a Vortech V-1 in my Saleen.
What would be a good plug for the boost?

Eric

xxkazp3rxx

I use to run the same plugs as above in my 500rwhp Cobra (forget the gap)... so im sure that would be fine in your car...

As far as oil.. I used 5w20 in my Cobra, as I do in my Mach 1... but, I will use Mobil 1, Penzoil or Valvoline .. just make sure you don't use a Fram filter... it's a POS... I normally just buy the good ol' Ford ones (motorcraft) ...

I wouldn't use Royal Purple... A lot of money for no real reason.. I have heard more bad things about Royal Purple engine oil, then good things... If I were to use an expensive oil (more expensive then above).. it'd be Amsoil.