Report Oil Cooler Line Replacement, have you done this? in Engine/Ancilliaries Posted April 5, 2019 In no way carry out the repair by using jubilee type clips....I did this and it cost me an bottom end engine rebuild on my S4s.....and I used heavy duty bolt clips, 2 either side of the joint. Get Pirtek to come out and do the joint properly. I was travelling at about 90mph on the motorway and the joint came apart dumping most of the engine oil all over the road.....I did well not to loose the car.....and they had to close the lane way to clean up the oil. I ended up spinning a big end bearing, and nearly destroying the crank. Hand to get the crank re-ground and as it was using oversize bearing from the factory it was a nightmare to find the correct over oversize bearings to suit. Now I'm running braided hoses from engine to coolers.