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10 months agoI mean personally sounds like you got the wrong radiator if there’s 2 holes with nothing attached, if those holes are actually holes and not just extra plastic from the mold, water will shot out and you’ll lose all the water within a few minutes, radiators are pressurized due to steam, once it starts the waterpump will shoot alot of it out and once steam builds the rest will follow, I’d pull it and take it back for the correct part, don’t be afraid to open it in store make sure it’s the correct fit.
If your car was sputtering they oil change might have been one of the first things they did, to make sure it wasn’t an issue with oil pickup or old oil sludging up the valves or creating to much resistance in the engine, Shops don’t make any money on Oil Changes so if they did it they probably had a reason to do it, I’m also sure that the paper you signed had a line in it saying it’s okay for them to do “fluid changes if deemed necessary” unless they’re charging you $150+ for it I’d just pay it and thank them for looking after my car