I'm running-in my B20 engine, this time only the rings need bedding in since the cylinders have been de-glazed. I have driven 400 miles now on special running-in oil. When should I change to normal 20/50 Oil ? The engine is running really well although I have not gone over 3500 rpm as yet.

Although the radiator was upgraded some time ago, my 4-blade mechanical cooling fan is not very efficient, a more efficient cooling fan is the 5-blade plastic fan. I haven't been able to locate one in NZ, although they are available from www.volvoworld.com. In the meantime I have installed an electric (blowing) cooling fan, in front of the radiator, just in case I need it as a back-up. I have wired it from an existing fuse with an on-off switch under the dashboard, a simple manual control. The water temperature needle moves to the hot area just after the engine is switched off (no forced circulation when engine and thus water pump is switched off) At a later stage I may control the electric fan by a thermostat and delayed switch off after shutting down the engine. The electric fan came off a Nissan Exa, it's a very compact, fast revving and noisy, 11" fan and installation was very simple by using the existing mounting brackets, drilling 3 holes was all that was required. I only want to use it as an auxiliary fan, not to replace the mecahnical fan.

Jim Hekker
http://www.ccar.co.nz/volvo/updates.html