I have just purchased a Poulan Pro 400E electric with 18 inch bar and it is a blast to use. I have been running it a total of maybe 3 or 4 hours though and I notice that the bar & chain oil has not gone down at all, and there is no oil residue anywhere. There is no smoke to indicate the chain isn't getting oil either though. I hesitate to continue using it until I am sure the chain is getting the oil it needs. I am not using Poulan oil, but it is good oil, recommended by my local outdoor tools shop.