@ALB posted:Yeah, I know that 1. I'm not that old and feeble...
And what Danny says above- most hydraulic fittings are very restrictive, more concerned with not blowing apart under high pressure and not meant for high volume flow- there's not a lot of fluid movement in a typical hydraulic system. An engine is the opposite- low pressure (comparatively)/high flow. I believe a VW engine with a 21 mm pump will flow something like 3 gal/min at 3,000 rpm- the 2 ½ quarts in a stock engine will have recirculated 6-7 times in that minute. I have also been told that some brands of automotive fittings are actually too restrictive for automotive use as well- almost like they're re-purposed hydraulic fittings. I know there are guys who examine every fitting that goes on any of their projects, and if a 3/8" drill bit won't pass through an AN-8 fitting they'll either drill it out (if it's feasible) or return it.
SSDD- that's easy- Super Sexy Double D's....
I bought into XRP’s spiel. Their connectors are average -1AN larger ID than even the aeroquip/earls fittings. Thinner walls.
I don’t know if their hose is likewise, which is why I’m following the common wisdom of AN-6 Fuel and AN-8 oil. I really wanted the cleaner look of 6, but don’t want to blow a fitting off w/cold oil.