A popular detailer on YouTube, Scott HD, has done an upgrade of the Bauer long throw polisher from Harbor Freight. He basically swaps out the grease with a lithium grease, and then changes out the backing plate with a more useable 5-inch backing plate made by Rupes. He has done some tests that show that the upgrade results in less vibration. These changes makes for a nice upgrade for the budget Bauer Long Throw Polisher from Harbor Freight.
The short answer is YES, using dishwashing soap is likely okay to use to wash your car. You’re going to get different answers depending on who you ask. Much of the information around this subject is due to the marketing indoctrination saying that you must use a dedicated car wash soap. Reasons given for doing so include: using a non-car soap will damage the car’s paint, a pH-neutral soap MUST be used otherwise it will also strip existing protectants, and dish soap will strip the car of its existing wax/sealant/coating. I don’t believe these claims to be true and I set out to test if a dishwashing soap is ok or not to use wash your car.