so what is the deal with motor oil, i just changed the oil in my truck and i used what i alwas use, shell rotella T synthetic 5w-40 anyhow when i was calling around to find someone that carried it(wally world was out) the guy at autozone said he wouldnt use that in a gas engine... wonder why he said that? an i using the wrong oil...

i did notice it was pretty black when it came out today... i change it every 5000 miles and from what i have read i think thats really conservitive.. i have heard people go ALOT longer than that...

anyhow just wondering if someone can shed some light...

 

idk what the number difference really is but ive never heard of anyone running 5w-40.

shell rotella T atleast to me is more know to run in diesels. idk if that is true or not but that guy may have been under the same impression.

i use Mobil 1 5w-30 Extended Performance and it is good till 15k but i change it around or just after 10k

 

5w-30 is what I use in the winter. 10w-30 in the summer. I wouldn't use 40 either. Not sure what the consequences are (coughGooglecough). I too Use Mobil 1. Not the fancy extended one because the regular Mobil 1 Synthetic can go 18k and be ok. I do my changes in the 7-10k range. Use a good full synthetic like Mobil 1 or Amsoil and you'll never go back to conventional.

 

you guys are starting to worry me now.. why wouldnt you use a 40.. ant what do the numbers mean...

 

ok after reading some its is ok to prolly use 5w-40 as it is just for engines that get hotter for more protection. but you dont need it and going to thick prolly isnt good for some things. i would recommend changing back to what it says in the book to use and that is 5w-30.

http://www.carbibles.com/engineoil_bible.html

 

http://www.micapeak.com/info/oiled.html

 

i also was doing some googling, and i found out that it is probally ok to run shell rotella T in the ranger, but gas millage will suffer slightly, and it could posibly hurt the cats.. not sure how...

i think ill do an oil chang in 3000miles and change up to a differant synthetic...

is motorcraft oil any good? i saw it at wally worl today, the have a motorcraft sythetic...

 

i heard motocraft was pretty good, cant be bad if ford recommends it in the manual.

 

thats what i was thinking... it was fairly cheep too... i think for the synthetic it was 2 or 3 $ a quart...

 

i think it is just a blend, not a full synthetic. but im not sure

 

Oils
# SAE 5W-20 Premium Synthetic Blend Motor Oil
# SAE 5W-30 Super Premium Motor Oil
# SAE 5W-30 Full Synthetic Motor Oil
# SAE 15W-40 Super Duty Diesel Motor Oil
# SAE 10W-30 Super Duty Diesel Motor Oil
# SAE 10W-30 Super Duty Motor Oil
# SAE 10W-30 Premium Motor Oil
# SAE 10W-40 Premium Motor Oil

got that from here

http://www.motorcraft.com/products.do?item=15

 

ok i should be good now...

i went to napa to get anouther oil filter, and i noticed they had napa brand full synthetic oil... so i got some of that..

5w30

 

napa = valvoline or how ever you spell it. good stuff

 

I use nothing but the Mobil 1 with the Blue Top.

 

according to my buddy at ford/toyota, you are supposed to used 5w-20 on newer (01+) rangers, at least durring the winter


ive got 5w-30 in mine now, and when i start it up after the weather being under 5deg or so, ill have no oil pressure till it warms up


*edit* this is all Non-synthetic and semi-synthetic

 

So if you're driving hard and really getting the temp up, would it be fine to use it?

And I use 5w-30 synthetic in the winter and 10w-30 in the summer. Only heard of the 10w-40 in diesels

 

i dought you will ever need more than the 5w-30, but idk for sure.

 

i use 10w-30, castrol drive hard(forgot the real name lol) and change every 3000 miles, my dad uses rotella T in his diesel, but i would NEVER go more than 3000 miles on an oil change, i maybe wasting money but i feel that is more than enough mile on oil

 

actually ive read reports that the more you change your oil the harder it is on the engine to an extent. i mean you still need regualr oil changes but if you got to 5k or 10k it would be better on it. if your oil is rated for it.

 

How are frequent oil changes hard on a motor?

 

i was wondering the same thing...maybe something with the seals or somthing...

 

First off its perfectly fine to use the 5w-40 rotella T.
Second the 4.0 requires 5w-30 not 5w-20.

Yes you might lose .1mpg by using the rotella t.
It has a more robust additive package for diesels but IS
API SL certified for use in gas engines..
It also happens to be Diesel certified too API CI-4+

This is all from memory.. yes I have to much time on my hands.

Summary.. Its good oil dont be afraid to use it.

Even Mobil 1's "truck and suv" oil is 5w-40

Dont listen to any stories about 40weight being evil either
they mostly stem from the old 10w-40 crap oil that would break down
and sludge up from the viscosity improvers when idiots would leave it in
for 10000+ miles.

Edit it has been shown with several studies its possible that FREQUENT
oil changes to produce more wear metals.
With a good syn oil like rotella T.. I would go at the minimum 5000 miles or 6monthes. Its a waste to change any sooner.

Note there are many different "rotella t" oils the most popular
are the syn 5w-40, and the Regular 15w40

Rand

 

Well I know it's of no use but I run Mobil 1 Synthetic 0w-20. I was running 5w-30 and it was noticeably louder (rattles and knocks) once the oil had a few thousand miles on it.

 

You are a total moron if:
-You think frequent oil changes is detrimental to your engine.
-You run more than 3000 miles on ANY oil.
-You think fancy, expensive, synthetic oil doesn't contaminate because it has "detergents" in it.

I have heard some of the stupidest crap from people on the topic of oil here. I am appauled at how stupid someone could be to say stuff like...

"With a good syn oil like rotella T.. I would go at the minimum 5000 miles or 6monthes. Its a waste to change any sooner."

or

"it has been shown with several studies its possible that FREQUENT
oil changes to produce more wear metals."

Heres a good one

"but if you got to 5k or 10k it would be better on it"

The only GOOD thing I have seen in here is this...

"i would NEVER go more than 3000 miles on an oil change, i maybe wasting money but i feel that is more than enough mile on oil"

 

i dont think i tottaly agree with you on that... that is the whole purpose of a heavy duty deisel oil, to extend the iterval of an oil change... i have heard of people running a good synthetic, rotella, amsoil ect.. and ONLY changing the filter at 3-5k, so they do a oil change about every other filter...

now that i know what i do.. ill probally be going back to retella in the spring/summer 5w40