Synthetic Fluids

[kalantar]

When running synthetic, how often do you change the oil?

[Intercooled]

Originally Posted by kalantar

When running synthetic, how often do you change the oil?

I'll usually go about 4K then change it. I'm old school and like to have fresh fluids. The Oil change indicator will usually say around 50-40% oil life left. I was always a 3k guy with regular oil.

[hummerpartsman]

Do not use any synthetic fluid in your power steering pump! I changed out everything in my 05 H2 with synthetic and 2 weeks after driving around I had to completly flush out the P/S fluid. With the synthetic fluid it would make funny noises and lock up on me when pushing the brake pedal. I was thinking it was the pump going bad so replaced it and put synthetic fluid back in. Didn't fix the problem - flushed it out and put regular fluid in it - works fine. Left the new pump on it but i am perty sure the fluid was the problem.