I got a phone call today from Chris Kiehn RAAus and he alerted me to to service bul and Jabby chat end of January and among other things I thought it interesting if you keep oil near bottom mark oil temp can run 15deg C lower than running at just above full mark. Newer Jabirus have a deeper sump which do not have the same problem. I gather if oil is near full mark oil gets churned up by crankshaft/pushrods and thus engine runs much hotter. Who would have thought it!! I was told similar applies to VW transporter engine but not sure about L2000. Anybody know? Ian M
The paste is below Engine oil level has a strong effect on oil temperatures. For all engines, the lowest oil temperatures are achieved when the oil level is set on the lower dipstick mark. Generally, this oil level is suitable for circuits or flights up to 3 hours duration. Note that testing has shown that setting the oil level slightly above the upper dipstick mark (i.e. slightly "over-full") can result in oil temperatures 15°C higher than when set at the lower mark. Figure 5 shows the length of the Jabiru 3300 dipstick. * CAUTION This applies to all Jabiru 3300 engines and to Jabiru 2200 engines prior to S/No. 22A- 2440. HOWEVER, more recent Jabiru 2200 engines (S/No. 2440 onwards) have a different sump (easily identified by it's lack of fins). Setting the oil level on the lower mark in these engines will give oil levels lower than is optimal.*
