Stop in for a cup of coffee

So into happier conversations.

I bought a brand new Trans cooler , universal at the swap meet. It came with 5/8 lines. Yes 5/8ths. Has a handful of reducers to reduce it down to the 3/8th to go into the trans. Will having that big of a line over factory cause any issues? I mean obviously it’ll increase fluid capacity and volume. But I was wondering if it’d affect the pressure anywhere