5w-20 or 5w-30 for 2002 GT?

[Gearhead91]

I am running mobil1 0w-20 (which is the same as 5w-20 conversional oil). Fellow Mustang owners (and a buddy at Ford) tell me to run 5w-30 instead or 5w-20. They told me that 5w-20 is too light of an oil and will not protect in extreme cases. What do you guys think?? What weight oil do you use??

 

[Mustang5L5]

I use 5W-30 in my '03

 

[bdcardinal]

use 5w30. i personally use mobil 1 with a motorcraft fl-820s filter.

 

[PoXiC]

I just put mobil1 5w-30 in my 01GT. Have been for a while.

 

[Gearhead91]

In my owners manual and on my oil fill car is says 5w-20. Did Ford change what they call for in 03-04?? I have an 02.

 

[rjstaaf]

Think about this. The modular 4.6 motor first debuted in 1994 and from then through 2000 Ford specified 5W-30 for it. Ford is now claiming that 5W-20 is required because of the tolerances of the motor. They are also going back to previous models and saying ooops you need 5W-20 for those as well. It is all due to upcoming EPA regulations and Ford's CAFE fuel efficiency rating. The thinner oil does reduce friction but, a lot of people also believe it reduces protection affecting the longevity of the motor.

 

[Mustang5L5]

The modular 4.6 motor first debuted in 1994

1991 for SOHC, 1993 for DOHC

 

[Jesus]

I have been using Mobil 0-30 for over a yera with no problems.

 

[rjstaaf]

1991 for SOHC, 1993 for DOHC

I stand corrected, you are right. It only further proves my point that Ford specified 5W-30 all these years and all of a sudden it isn't good enough anymore.

 

[UVBNHAD]

Amsol 5w-20 w/ K&N filter for my 04.

 

[DavidCroft]

I use Mobil 1 synth 15W50. I read on the back of the Mobil 1 bottles that it is recommended for Muscle car applications, turbo'd and supercharged cars. Seems like you guys run real thin oil. Should I be running this heavy of oil?

 

[wms004]

Amsol 5w-20 w/ K&N filter for my 04.

i am running 5w-20 Amsoil right now and need to get an oil change soon. Did you order online or get it at a store? If a store which one?? I ordered mine online but its too expensive.. i'm considering just going back to mobil 1 5w-30 syn.

 

[twogts4us]

I use Mobil 1 synth 15W50. I read on the back of the Mobil 1 bottles that it is recommended for Muscle car applications, turbo'd and supercharged cars. Seems like you guys run real thin oil. Should I be running this heavy of oil?

No, that's just too heavy, especially for an OHC engine.
For what it's worth, I just switched both our GTs from Mobil 1's 0W-20 to their 5W-30 - as this is what I've heard many people recommend for the 4.6L Ford engine.

 

[UVBNHAD]

i am running 5w-20 Amsoil right now and need to get an oil change soon. Did you order online or get it at a store? If a store which one?? I ordered mine online but its too expensive.. i'm considering just going back to mobil 1 5w-30 syn.

I got it from a local speed shop, SpeedSouth. I'd just whip out the phone book and call some of your local shops. Someone is bound to carry it in your area.

I use Mobil 1 synth 15W50. I read on the back of the Mobil 1 bottles that it is recommended for Muscle car applications, turbo'd and supercharged cars. Seems like you guys run real thin oil. Should I be running this heavy of oil?

You need to check your owner's manual for the recommended weight but I wouldn't be running that heavy of a oil on a car as new as yours; that is unless you have high mileage.

 

[DarkShadowGT]

i use mobil1 5w-30 in mine and theres no problem with my stang

 

[02camarokiller]

5W30 Royal Purple

 

[AdRock]

5w-30 AMSOIL and Motorcraft filter here. Tried 5w-20 and got tired of the ticking, went to 10w-30, engine ran different, switched to 5w-30 and got a happy little engine.

 

[Defleshed]

5w30 mobil 1 oil + K&N "gold" filter. no problems.

 

[Venom_Nitrous]

My owner's manual says 10W30 It's a 2000 my brothers 2001 says 5w30 on the oil fill cap. WTF. Ford recommended 3 different oils for the same engine. I use 0w20. I Don't give a hoot in hell about my oil protecting my enine. Thinner oil = more power. I wanna blown my engine. Blown engine = excuse for forged shortblock.

 

[twogts4us]

My owner's manual says 10W30 It's a 2000 my brothers 2001 says 5w30 on the oil fill cap. WTF. Ford recommended 3 different oils for the same engine. I use 0w20. I Don't give a hoot in hell about my oil protecting my enine. Thinner oil = more power. I wanna blown my engine. Blown engine = excuse for forged shortblock.

Ummm, ya know, a forged block will still need oil...