It would be fundimental and common for a hydraulic system to have a larger return line than pressure line. it would also likely be an R4 (low prerssure-return)rated hose if it has markings. I wouldn't trust the mechanic who told you otherwise about anything now.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
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Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain