While the primary function of auto transmission fluid is to lubricate the various parts of the transmission, it can serve other functions as well: Clean and protect metal surfaces from wear. Condition gaskets. Enhance cooling function and reduce high operating temperatures. Increase rotational speed and temperature range. I would like to change my automatic transmission fluid but I'm not sure what to buy. I seen 3 different royal purple oils: max gear 75w140, 85w140 and 75w90. 1. Drop the pan and do a filter change and partial fluid replacement. 2. Take it to a shop that has an automated flush machine and have all the fluid replaced, but leave the filter in. Number 2 is actually specified in the Ford Workshop Service Manual, but I like to alternate between #1 and #2 every 30K miles so I can get all the fluid changed How To Change Honda Automatic Transmission Fluid - EricTheCarGuyhttp://www.ericthecarguy.com/It seems simple enough but sometimes the simple things can be ma Here is the step by step on how to change the ATF fluid in the TDI 4 speed 01M Automatic transmission. For the parts lists I included cropped picture links to the ETKA pages relative to the 01M transmission. Here are two links to the complete Automatic fluid change .pdf format, Both are the Welcome to another 10 minute Job! Today we will go through the procedure for changing the transmission fluid on your Silverado or Sierra 1500 truck. Like, su Step 4: Remove the transmission oil pan fill plug. Locate the fill plug, which is located on the angled portion of the transmission oil pan. Break the fill plug loose with a 6mm hex bit and ratchet. Do not fully remove the fill plug. Place a drain pan under the fill plug in case ATF comes out, then remove the fill plug. Transmission fluid is a specialized lubricant in your vehicle’s transmission system. This fluid is designed to reduce friction, dissipate heat, and provide hydraulic power, making it possible for your vehicle to shift gears and transmit power from the engine to the wheels. Transmission fluid plays several critical roles in your vehicle XXvzv8.