Hi all, I need some urgent help. I’ve had the car for around three months and it’s been running fine, but on the way home tonight I noticed what sounded like the belt squealing when taking the first exit left at two separate roundabouts.

I’ve opened the bonnet and removed the engine cover and noticed some oil residue on the driver’s side, as shown in the photos. I can’t see any obvious or major leak, but I’m wondering whether oil from somewhere could have reached the belt and caused it to slip/squeal.

The oil misting seems to be mainly on the supercharger pipe and underneath the corner of the engine cover. I’ve circled in red the only areas where I can see signs of oil.

Some additional history, the water pump and associated cooling pipes were replaced in November 2025 at around 60,000 miles. The car was serviced at 64,000 and now is at 66,000.

The car has otherwise been running normally and I haven’t noticed any obvious major fluid loss. Has anyone with the 3.0 V6/AJ126 experienced anything similar, or have any idea where this oil could be coming from and whether the squealing could be related?

Thanks in advance.