OIL?

[9935TH]

at the risk of sounding ignorant, whats the right weight engine oil to use on my 99 gt 4.6 in the cold winter months?

 

[Skidawg]

For the '99, Ford recommended 5W-30. After 2001 or 2002, they changed the recommendation to 5W-20 (the reasons have been discussed dozens of times).

They might have moved the 5W-20 recommendation back via service bulletin, but I don't remember.

 

[FivePointStang]

For the '99, Ford recommended 5W-30. After 2001 or 2002, they changed the recommendation to 5W-20 (the reasons have been discussed dozens of times).

They might have moved the 5W-20 recommendation back via service bulletin, but I don't remember.

+1
Use Motorcraft 5W-30

 

[40th GT]

They changed the recommendation in 2001 due to CAFE reasons. You should be fine with either 5w-20 or 5w-30. Just make sure to change the oil regularly.

 

[Pennywise2]

One of the reasons they switched to 5W20 01+ was
for better fuel economy.I would run Mobil 1 5W30 all
year around.

 

[White97Jimmy]

+1 on Mobil1 5w30 all year

I would use Mobil1 5w20, but I can't find it in the big 5 qt jugs.

 

[BennyBlown2v]

5w30, Penzoil, Valvoline, Mobil 1, whatever you like really. Just be sure to change it every 3000m or less, and to change the filter at reccomended intervals.

 

[GettinThere]

Just be sure to change it every 3000m or less...

Every 3000 meters? Damn that would get expensive.



Sorry, couldn't help it

 

[PowerSplash93]

I use 5w30 year round but I like to use amsoil

 

[merc123]

walmart has 5 qt motorcraft 5w-20 for around $9 or so.

 

[steveb24]

rp 5W-20 FTW!

 

[03ghoststang]

i use mobil 1 5w-20 with the motorcraft filter but have been considering using 5w-30