Cali EV Oil Leak

Walked into the shed one morning and spotted what looked like an oil leak at the front of the EV’s sump. No oil drip on the floor though. I cleaned it up with degreaser and kept using the bike and, sure enough, it kept sweating out – not enough to leave a drip.

I was concerned that it might be leaking out of the timing cover – a bigger job to fix. I consulted one of the bods in the MGCoV and we came to the joint conclusion that, with luck, it was the sump gasket.

Ran the big girl up on the ramp and and dropped the oil – she was due for her 55,000km oil change fortuitously – and removed the sump.

The gasket, which I’d reused from previous oil filter changes, was of a thin, plastic-type material. The new one, from Mario at Thunderbikes in Perth, was thicker and more fibrous.

Note the hose clamp around the new oil filter, which is nosed up against the pressure valve to ensure that the filter can’t loosen and spin off. That’s the theory anyway, and I’ve always done it.

I ran a thin smear of grease around the sump and the top of the gasket – it allows the sump to move around slightly as I insert the sump screws, and to seal the sump when tightened up. Filled her up with Penrite 15W50 Diesel.

I also changed the gearbox and rear drive oils as well, since the Cali hasn’t had a lot of use over the past two years due to Covid restrictions. (My Ford manual sez that less than 10,000kms per year is consider hard use for the engine oil.)

So she’s back on the road and time will tell if the problem is resolved – or if it is (gulp) the timing chest gasket.

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