I sent Gates's engineering department an email asking if their PCV hose is suitable for Dexron III in low pressure applications. I hope they get back to me before my new alternator arrives. I'll keep you posted what they say.


19/32" hose is 15.081 mm. 5/8" is 15.875 mm. A difference of .8mm. There should be a ~.44mm gap around a 15mm barb when using 5/8" hose. Whereas the gap of 0.04 mm for 19/32". Which is about what would be needed to put it on easily.