Davy T

Good Morning Folks, New to the Forum and have been a Jaguar convert since January 2019 when I bought an amazing XF with the 2.7 engine. I had to get the water cooler for the gear box changed and since it has came out of the garage, I have had a vibration when it gets to certain speeds at at certain revs. The oil was changed in the gearbox and vibration oil was also added. The old oil was absolutely disgusting and the sump was replaced from a specialist replacement company Looking to see if anyone else has had this problem and what was the answer to get it fixed. The garage that did the oil change said they had a similar problem with another Landrover with the same engine and they just changed the oil. Thanks in advance, Davy T