No leak at all I until started up drive way. Shortly after a noticed trail of oil. I estimate a loss 1-1.5 qt in 1 to 1.5 minutes. Can't see leak but appears to be coming in the general area of filter, but is not the filter, maybe just a little higher and very close to filter. When truck is started it leaks oil like a seive. Any idea, what are the things I should check. Thanks