Clutch went soft on me on way to work today and going to limp home tonight. Checked fluid level and very low. What fluid should I fill it with? Is there a best one on the market?

 

You have a hydralic clutch, so most likely DOT 4 brake fluid.
Do you have your owners manual, it will tell you for sure.

 

Castrol GTLMA. Be sure to check your brake master cylinder as well. Both should be a minimum monthly check. For the clutch I'd check more often as you may have a leak. I replaced my master and slave 2 years ago and I haven't had to add any between flushes.

 

No owners manuel and just bought it recently. 95 disco 1 v8i

 

Brake fluid, buy a quart of it and keep it in the truck until you can get the leak fixed.