QUICK QUICK OIL QUESTION--00 GT

SVT32VDOHC · Jun 5, 2004

What type of oil is recommended in the owners manual or the tag under the hood for a 00 Mustang GT 4.6L. 5w20 or 5w30

bdcardinal · Jun 5, 2004

twogts4us · Jun 5, 2004

5w-20 on our 01 and 02 and I'm fairly certain the 00 would be the same. Mobil 1's recommendation, to substitute for Ford's recommendation, is Mobil 1 0w-20. Just a little added FYI...

00BlackBeautyGT · Jun 5, 2004

For 2000, 5w-30 is what is recommended. That is what I use.

bdcardinal · Jun 5, 2004

ya, ford switched in 2001, so therefore on the 2000, you use 5w30.

smokin'Red35th · Jun 5, 2004

not to hijack, but how bout a 99?

bdcardinal · Jun 5, 2004

same 5w30

streetstang03 · Jun 5, 2004

smokin'Red35th said:
not to hijack, but how bout a 99?

99's call for 5w-30 as well. I use 5w-20 in my 00GT (Mobil 1). the engine blocks were changed in 01 and call for 5w-20 since the ports in the engine were smaller and 5w-30 is harder on the engine since it has to push a thicker oil through smaller ports. at least thats what i've learned/heard while working for Ford all the newer engines (01+) used in the Ford vehicles call for 5w-20

40th GT · Aug 12, 2005

streetstang03 said:
99's call for 5w-30 as well. I use 5w-20 in my 00GT (Mobil 1). the engine blocks were changed in 01 and call for 5w-20 since the ports in the engine were smaller and 5w-30 is harder on the engine since it has to push a thicker oil through smaller ports. at least thats what i've learned/heard while working for Ford all the newer engines (01+) used in the Ford vehicles call for 5w-20

Really? I thought Ford changed the oil requirement only for CAFE reasons.

rjstaaf · Aug 12, 2005

streetstang03 said:
99's call for 5w-30 as well. I use 5w-20 in my 00GT (Mobil 1). the engine blocks were changed in 01 and call for 5w-20 since the ports in the engine were smaller and 5w-30 is harder on the engine since it has to push a thicker oil through smaller ports. at least thats what i've learned/heard while working for Ford all the newer engines (01+) used in the Ford vehicles call for 5w-20

I would take anything you hear in the dealership with a grain of salt. I certainly wouldn't consider it as the best place to learn about your car

I believe what you are thinking about is that 99-00 Mustangs used the Windsor block whereas 01 and up use the Romeo block. The Romeo block was also used prior to 99. When Ford designed the 4.6 and started putting it in cars way back in 91 they specified 5W-30 for it and continued to do so until 2001. The purpose of the modular motor is that parts are interchangeable. Don't you think a change in tolerances would affect this interchangablity?

If you look at the TSB Ford issued in 2001 the ONLY thing mentioned is fuel economy, nothing else.

Venom_Nitrous · Aug 12, 2005

my 2000 calls for 10w30. Why

stangGT97 · Aug 12, 2005

Venom_Nitrous said:
my 2000 calls for 10w30. Why

you're special

Dragstr05 · Aug 12, 2005

2000 is 5w30. Ford switched to 5w20 for fuel economy reasons. You could have a 2001+ and use 5w30 and it will not hurt it, but you might see a slight reduction in fuel economy.

Skidzz · Aug 12, 2005

Venom_Nitrous said:
my 2000 calls for 10w30. Why

I've been using Mobil 1 10w30 with no problems. Don't worry about it 5w30 or 10w30 is fine.

QUICK QUICK OIL QUESTION--00 GT

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