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

Gearhead91

Member

Sep 23, 2003

132

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New Jersey

Oct 2, 2004

#1

• Oct 2, 2004

• #1

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

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

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Oct 2, 2004

#2

• Oct 2, 2004

• #2

I use 5W-30 in my '03

 

B

bdcardinal

tree hugger

Jun 10, 2003

3,612

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69

santa barbara, CA

Oct 2, 2004

#3

• Oct 2, 2004

• #3

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

 

PoXiC

New Member

Jul 31, 2003

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Oct 2, 2004

#4

• Oct 2, 2004

• #4

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

 

Gearhead91

Member

Sep 23, 2003

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New Jersey

Oct 2, 2004

#5

• Oct 2, 2004

• #5

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.

 

R

rjstaaf

Founding Member

May 31, 2002

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#6

• Oct 2, 2004

• #6

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

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,255

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Oct 2, 2004

#7

• Oct 2, 2004

• #7

rjstaaf said:

The modular 4.6 motor first debuted in 1994

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1991 for SOHC, 1993 for DOHC

 

Jesus

Banned

May 13, 2003

267

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Woodland Hills, CA

Oct 2, 2004

#8

• Oct 2, 2004

• #8

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

 

R

rjstaaf

Founding Member

May 31, 2002

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#9

• Oct 2, 2004

• #9

Mustang5L5 said:

1991 for SOHC, 1993 for DOHC

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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

New Member

Aug 18, 2004

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McCalla, AL

Oct 2, 2004

#10

• Oct 2, 2004

• #10

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

 

D

DavidCroft

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Mar 16, 2002

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Sugar Land TX(Houston Area)

Oct 2, 2004

#11

• Oct 2, 2004

• #11

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

Founding Member

Jan 15, 2002

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Los Angeles

Oct 2, 2004

#12

• Oct 2, 2004

• #12

UVBNHAD said:

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

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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

15 Year Member

Apr 1, 2004

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Dunedin, FL

Oct 2, 2004

#13

• Oct 2, 2004

• #13

DavidCroft said:

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?

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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

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#14

• Oct 2, 2004

• #14

wms004 said:

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.

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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?

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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.

 

D

DarkShadowGT

Founding Member

Oct 16, 2002

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Las Vegas, NV

Oct 2, 2004

#15

• Oct 2, 2004

• #15

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

 

02camarokiller

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Jul 28, 2004

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Enid, Oklahoma

Oct 2, 2004

#16

• Oct 2, 2004

• #16

5W30 Royal Purple

 

AdRock

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Nov 13, 2003

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South Texas

Oct 3, 2004

#17

• Oct 3, 2004

• #17

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

Satanic Mechanic

Nov 30, 2003

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In Torment, In Hell

Oct 3, 2004

#18

• Oct 3, 2004

• #18

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

 

Venom_Nitrous

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Aug 23, 2002

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Spearfish, SD

Oct 3, 2004

#19

• Oct 3, 2004

• #19

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

15 Year Member

Apr 1, 2004

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Dunedin, FL

Oct 3, 2004

#20

• Oct 3, 2004

• #20

Venom_Nitrous said:

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.

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