stanglx2.3

I was wondering what is the best type of oil for my 1999 Cobra. It has 140,000 miles and is a daily driver. Should I use different oil different times of the year? I also have a slight leak from my valve cover gasket (havent had time to replace yet) so I was thinking maybe a thickier oil. Also I usually use the motor craft OEM filter. Any input is appreciated. Thanks


P.S. I live in North Carolina, (for tempature ranges)

DreamerGT

A 5w-30 would fit your app. all year round.

Blackvenom01

yes i also agree 5w30...you can go with synthetic as a better oil but once you go synthetic your not supposed to go back!!

DreamerGT

That's just a myth, I switch between the two all the time. Oils today are made to be compatible with each other.

Timspony

I'd go with Mobil 1 5w30

Mustang3GT07

+1 or RP

Cpl_Smith

I literally just got done changing oil and filters on my 2 97 cobras about an hour ago. I used Castrol 5w-30 Full Synthetic

SVTeeshirt

I wouldn't say synthetic is a better oil, it just lasts longer, it boils down to if you want to change your oil every 3 or 5000 miles. If you can do 2 oil changes with a dino oil for the price of 1 synthetic you might as well go with a dino oil.

Bladerunner

If it were me I would use Mobil 1 10W30 with a Motorcraft oil filter.

Blackvenom01

what im gonna do from now on is just use the RP oil filter and keep going with the mobil 1...royal purples filters are top of the line i did some research on it and compared them to mobils and they really are the best IMO....im just the kind of person that wants to put the best i can in my car even if it is sorta unneeded....i still havent doin RP oil though i cant bring myself to paying that much lol