I recieved my gear and diff oils from Caterham this week.

They supply different oils to the shell oils specified in the build manual (maybe they, like me, found those oils impossible to source in small quantities ?!?)

The gear oil supplied is Comma SX75W-90 GL5. The manual says about 1.2L is needed, but I put in about 1.7L before oil dripped out of the side level plug.

Access to the side level plug is a bit of an ask; space is restricted. However, my homemade tool worked nicely. I just cut down a 3/8" square piece of steel to about 1.5cm (thanks ebay) and turned it with a ring spanner.

(I might go on Dragon's Den with this)

I tried a fancy method using a syphon to get the oil in. However, it was a bit rubbish. In the end it was better just to point the container upside down, with the pipe inserted in the hole, and puncture the top with a pin.

Once the oils were in I completed the plumbing above the drain plug and plugged in the fuel pipe. (NB I swapped this over the the RH side of the tunnel - thanks for the warning Peter).

I have now started to make the connectors for the headlamps ahead of plumbing in the radiator (again). The wiring colours don't seem to exactly match the instructions. I may connect the battery tomorrow to test them...

Edit: actually the headlamp colour mostly do match. The only exception is the side light wire from the loom is red/black on the LHS and red/white on the RHS (not red as stated in the 8/2014 manual)