When I get my car back at the end of the week, I am doing an oil change, removing the Miller CRO 10W/40 running in oil, and replacing with Millers fully synthetic 5W/50 that was supplied with my kit.
I have been given differing advice on the oil drain and refill process. I thought I'd document what I think is the best way, for you guys to review, so I can get a definitive process, and maybe help others in future too.
1. run the car for a few minutes to get the existing oil warmed through a little.
2. Don't use the sump plug on the oil tank, as apparently its soft and easy to damage the thread. Instead, unscrew both the inlet and outlet pipes at their sump attachments (there is a sacrificial section on the sump in case of any tragic threading, and a LOT cheaper than a new oil tank).
3. Remove and wipe out the "finger filter" rear LHS of engine
4. Remove oil filter
Then in reverse pretty much, and when everything is tight again:
1. Replace oil filter with a new one, add a little oil into it before refitting
2. Fill 1 litre into the top of the engine and 4 litres into the dry sump tank.
3. Unplug inertia switch to stop fueling
4. Unplug crank position sensor (front RHS bottom of engine) to stop a spark.
5. Crank engine until oil Pressure is noted.
6. Then slowly refill to the top of the 1st baffle that you can see in the oil tank.(potentially around 7 to 7.5 litres).
7. Plug crank position sensor and inertia switch back together.
8. Fire up normally.
Does this process sound correct to everyone who has done this before? Anything amendments or alternative perspective would be much appreciated.