A good automatic Transmission Fluid should be used for a 2007 Silverado. It is recommended that Dexron VI ATF from GM is used.
Dextron II transmission fluid.
DEXTRON II automatic transmission fluid
Valvoline Synthetic Transmission Fluid
If it is an automatic transmission, Dexron III or Mercon are both acceptable.
Dextron or Mercon III is what the 4L60E transmission take. Use only that..
Dexron iii
DEXRON III Automatic transmission fluid
You use mercon 5
dexron lll
To add transmission fluid to a 2001 Chevy Silverado 1500 Z71, locate the transmission dipstick tube, which is usually found near the back of the engine compartment. Remove the dipstick, and use a funnel to add the appropriate type of transmission fluid through the tube. Be sure to check the fluid level with the dipstick while the engine is running and the transmission is in park, ensuring it’s at the correct level. Always consult your owner's manual for specific fluid recommendations and instructions.
There is no dipstick for transmission fluid on these vehicle. You will have to take it to dealer, there is a special tool they use
For a 2007 Ford Taurus, you should use Mercon V automatic transmission fluid. It's essential to check the owner's manual for any specific recommendations and ensure the fluid meets the required specifications. Always use a high-quality brand to maintain optimal performance and longevity of the transmission.