Park tool PPL-1 grease is amazing, this is the only grease I will use on my Road, Gravel, and Mountain bikes. Compared to other greases this has no stinky smell and works extremely well in extreme weather. It's the right consistency for bearings, pedals, cranks, and head tubes. Won't harm steel, aluminum, titanium, or carbon frames. I highly recommend this product it's worth every penny.
Works great on my road bike and thru axle mountain bike. Allows me to use my Park Tool chain cleaner to clean the chain and not get grimy solvent and water all over the rear wheel. This is one of those tools that you can probably get by without but once you have one you'll be glad you purchased.
For internally routed bikes, this tool is a godsend. True, with a lot of patience, and often, a little luck, you can run your cables internally without this tool. The thing is this tool takes all of the patience and luck out of it. You just run the leader through with the magnet, attach the cablehose to the leader, and pull it through. Total frustration-saver!