I use some kind of high pressure red grease from Valvoline. I chose it for two reasons. Price and it seems not to separate in the gun like the other stuff I’ve used in the past. I guess a third reason is it will blend into the paint color if I get any on the car.
Thanks to all for the replies.
I’ll continue to use my Valvoline multi purpose #2 EP GC-LB rated red grease (thanks Erica) for European cars . So far it has worked well for the last 8 years …