cp2295
Well-Known Member
- Joined
- Jul 25, 2013
- Messages
- 1,027
- City
- Washougal, wa
- Vehicle Year
- 1999
- Transmission
- Manual
- My credo
- If you ain't first you're last
I got a 98 4.0 ohv. pulls 19.5" Hg at idle with 155k on the motor. I currently am running 5w-30 mobil 1 full synthetic and according to the dipstick i have not lost any oil in 2,500 miles. I got all new seals and gaskets on the motor (even the heads). So this is not a concern of running thicker oil to stop leaks, just want to know whats better. Summer is coming and i just wanted to know if running 10w-40 would be better since i go mudding and trail riding too, so the engine will be revving up high sometimes to get me out of situations. Again i will be running Mobil 1 full synthetic with a motorcraft filter.
How long between oil changes also? i was told with full synthetic i can go 10k between changes.
How long between oil changes also? i was told with full synthetic i can go 10k between changes.