oil weight
Taken from http://www.svtperformance.com/forums...d.php?t=213074
Q. Oil and Oil filter?
A. This question is dependant on both climate, wallet size, and driving style. The spec’ed oil for 99 cobras is 5w-30. For 01s its 5w-20. It will not make a difference which ones you use. Since all these cars are out of the factory warranty, use whatever one is easier to find. If you live in a very hot climate and like to beat on the car, go for something a little thicker. If you live in a cold area, get a thinner oil in order to get the valvetrain lubricated quicker. Do not run anything thicker than a 10w-40. This is not your buddies small block chevy with bearing clearance so thick you could shove a pen through it. You can’t run such thick oil on a mod motor. If you want to get the absolute best oil, go for either german castrol (says made in germany on the back) or amsoil. If you have a midrange budget, get mobil 1 or royal purple. If you want synthetic but don’t have a ton of cash, valvoline or castrol syntec is ok. If you don’t care, put some normal dino oil in.
Oil filters. There are many on the market. All of them are ok except for FRAM. FRAM is junk and the only place it should be is on your lawn mower. The most popular are the Motorcraft Fl820s filter, the K&N one and the Mobil M1 filter.
Oil change frequency and oil level are too controversial so I’ll only tell you what I do. I change my mobil 1 synthetic at 3k miles and run 7 quarts.
Q. Oil and Oil filter?
A. This question is dependant on both climate, wallet size, and driving style. The spec’ed oil for 99 cobras is 5w-30. For 01s its 5w-20. It will not make a difference which ones you use. Since all these cars are out of the factory warranty, use whatever one is easier to find. If you live in a very hot climate and like to beat on the car, go for something a little thicker. If you live in a cold area, get a thinner oil in order to get the valvetrain lubricated quicker. Do not run anything thicker than a 10w-40. This is not your buddies small block chevy with bearing clearance so thick you could shove a pen through it. You can’t run such thick oil on a mod motor. If you want to get the absolute best oil, go for either german castrol (says made in germany on the back) or amsoil. If you have a midrange budget, get mobil 1 or royal purple. If you want synthetic but don’t have a ton of cash, valvoline or castrol syntec is ok. If you don’t care, put some normal dino oil in.
Oil filters. There are many on the market. All of them are ok except for FRAM. FRAM is junk and the only place it should be is on your lawn mower. The most popular are the Motorcraft Fl820s filter, the K&N one and the Mobil M1 filter.
Oil change frequency and oil level are too controversial so I’ll only tell you what I do. I change my mobil 1 synthetic at 3k miles and run 7 quarts.


