burnin oil

[BMFer]

Only time I've seen said failure on a 4.6 was when an oil filter housing gasket failed and the moron driver drove it 12 miles back to the shop with the motor rattling away. I am not disagreeing completely with you. I agree anything over 5W-30 or 10W-30 is too thick, and 10W-40 is a just plain shitty grade of oil to begin with. 5W-20, OTOH, is not about tighter clearances. It's all about CAPA, Ford saving a few bucks on fines, and Ford making money on selling new engines or new cars when mod V-8's fail at 100-150K from using water thin oil. Use 5W-20 if you wish, but when your engine smokes heavily every time you idle it for 5 minutes at 75K, know why. I have seen it first hand, in a government fleet a couple blocks up the road from me. They switched back to 10W-30 and disregarded Ford's BS recommendations, and no further issues.

If one were to use strictly Mobil 1 or Amsoil 5W-20, that may be a whole different story.

[DanHool]

can someone here tell me where a 98 Crown Vic's air filter is located? I've been looking for that since I started this job.

jiffy lube knows where my cabin air filter was cause they said i needed a new one and i paid 29 dollars for a new one

[zwack88]

lol omg You have to be kidding.

[mercenvy]

For some reason I didn't think they had them...

[zwack88]

That is why I was hoping he was kidding.

[mercenvy]

10-4!

[BigTomZ]

I run 5w30 and it has been just fine.

my '00 doesnt have a cabin air filter. i'm not sure, but i don't think panthers started using them until '03.

[95crwnvic54]

Thicker oil at higher RPM's can cause the lifters to push the valves off the seats. Imagine some of the valves opening when they shouldn't..?

[Grandmarchris]

The only reason that ford used 5w-20 is because of CAFE....For those who dont know what that is...the feds average the mpg of every model a car manufacurer makes (excluding heavy duty trucks i think) and it has to meet a certain number if it doesnt meet that number then the manufacturer get fined(I think its $1,000 a car)..Thats why even the mustang runs 5w-20 oil...The heaviest oil Ive seen used in passenger cars since 2000 is 5w-30...

Personally if your in a high performance app. then I would use at the least 5w-30 when it calls for 5w-20 (synthetic oil of course)..

I used to use 10w-40 but that was before I fixed the crack in my oil filter adapter...Now im back to 10w30

When it comes to the stock application use what the book tells you to use...Its there for a reason..