i was wondering if it would help with engine wear to switch from the 5w-20 to a 5w-30 since its thicker also is synthetic a better choice as well for engine wear? i change my oil every 5k since the truck is a daily driver and doesnt go off road (much ) and i've never towed anything with it and the most weight its ever had in the bed was 620lbs..
Thanks!

 

Ford calls for 5W20 so stick with 5W20. The only time I would consider a thicker oil would be if I found myself adding between changes or if the thinner oil wasn't keeping pressure at a proper level.

 

these motors are biult with very tight tolerances between parts. this is the reason ford sais 5w-20 its thinner to get into everyting. a thicker oil is no good for these engines.

 

If you have the 5.4L 3 valve, the thicker oil can cause problems with the cam phasers also. They are made to work specifically with 5W20 oil.

 

The 3V 5.4L was designed to work with 5W20 Synthetic Blend. If you feel the need for added protection, go with a full synthetic.

 

whoa i had no idea
i'm using quakerstate 5w-20 dino oil at the moment

another question. i plan on changing my fuel filter soon and i was wondering if anyone had any problems with it? and if theres any particular filter someone would recommend? i went out and got fram becuase thats what wallmart had but if theres a better filter im willing to try it

 

Motorcraft is the fuel filter I recommend

 

Stick with Motorcraft, some of the aftermarket filters don't engage the clips properly. This can cause the fuel line to slip off or at the very least leak.

 

Would those of you who claim these new tight tolerances please cite your sources? I think you're full of it.

I've run 5W-30 since the 800 mile mark, and I have 34K now with NO problems. I've done the same thing with my wife's Taurus, which now has 96K, and no ticking, smoking, or ANY problems.

Go learn about the C.A.F.E. standards, and you'll see why Ford and Honda go for the 5W-20 crap.

I'm not saying you shouldn't run 5W-20, but 5W-30 DOES provide more protection, especially during these warmer months.

Here's a good read.

5W-20 and Ford

 

You might want to read things like this.

http://www.ford-trucks.com/forums/ar...t%205W20%20UOA
http://theoildrop.server101.com/cgi/...c;f=3;t=001574

 

the facts are the facts 5.4 3v needs 5w-20 these are not 1970's muscle cars wear thicker is better it is a different technology these days.

 

Wow, i just got done reading all of those links and now I've got a headache! I ran nothing but Mobil 1 5w-30 in my V-10 for 5 years and got 175,000 trouble free miles out of the engine. I changed the oil and filter every 5000 miles and I could see inside of the valve cover that threre wasn't any gumming up or coking at all. How well does the Motorcraft 5w-20 oil hold up as far as gumming up or coking the engine? I plan on keeping this truck for 4-5 years also and want to make sure I get the best protection I can get.

 

Royal Purple 5W20 and K&N Oil Filter

 

Not sure if you sent me there in support of or against my earlier post, but these links are about the same as this thread.

Although, I did like this guy's post -

And like stated earlier, I'll continue with the 5W-30.

 

In other words, you ignored the UOA's that stated that the 5w20 works quite well and protects quite well. Have you done a UOA on your 5w30 to see if it protects that well?
So far I have 120k on 2 vehicles using 5w20 with no oil failure or usage. I will stick with the recommended.