hey guys about to do an oil change tomorrow. wondering what's the best oil to run on a 4.6 4 valve in very hot temperature. I live in the middle of the pacific and temps. get around 90 degrees year round. and what's a good rear differential fluid also. thanks

 

mobil or royal purple full synthetic 5w-30

 

Mobile 1 5w\30 here in all my Ponys

 

so a 5w30 is good for hot temps? thanks guys

 

I run Penzoil Ultra 10w30.

 

5w30 sounds right ...can't go wrong with Mobil 1 or RP

 

I just changed my plugs and wires. why is my check engine light still on. it only goes on after driving for a little?

 

Ummmm........................what code is it? Plugs and wires dont make CELs go away.

 

go to advanced auto or autozone have them pull the codes then come back here and let us know and we can help

 

could they do thy at napa? it's the only auto parts store here on Guam