orangebluegreen
Gold Member
I just bought a Kubota OEM filter for the first time last week. I always fill the filter with oil before putting it on to help avoid dry starts.
While pouring oil into the center and filing the filter I noticed a bubble of air coming out of one of the “drain back valve” holes (which is supposed to be a one way rubber seal). In many decades of changing my own oil I have never seen any filter bubble air from those holes. Makes me wonder if the Kubota OEM filter will actually prevent drainback? I would think not. Unless designed this way (I couldn’t imagine why) I have serious doubts about the Kubota OEM filter and wondering who might make better ones.
BTW....I bite the bullet and buy $11 Mobil-1 filters on my Honda....you can’t see what’s going on inside them and if they are “bypassing” so I figure the safest is with the oil manufacturer. I figure if I use Mobil-1 oil then Mobil-1 filters are likely to support the quality claims of the oil.
Most of the filter makers do not make oil. If your engine wears who do you blame, the filter maker or the oil? The filter maker would blame the oil, the oil maker would blame the filter. Using a filter made by the oil maker leaves no excuses.
While pouring oil into the center and filing the filter I noticed a bubble of air coming out of one of the “drain back valve” holes (which is supposed to be a one way rubber seal). In many decades of changing my own oil I have never seen any filter bubble air from those holes. Makes me wonder if the Kubota OEM filter will actually prevent drainback? I would think not. Unless designed this way (I couldn’t imagine why) I have serious doubts about the Kubota OEM filter and wondering who might make better ones.
BTW....I bite the bullet and buy $11 Mobil-1 filters on my Honda....you can’t see what’s going on inside them and if they are “bypassing” so I figure the safest is with the oil manufacturer. I figure if I use Mobil-1 oil then Mobil-1 filters are likely to support the quality claims of the oil.
Most of the filter makers do not make oil. If your engine wears who do you blame, the filter maker or the oil? The filter maker would blame the oil, the oil maker would blame the filter. Using a filter made by the oil maker leaves no excuses.