I would give 5 stars but obviously this thing is being done as close as possible before it starts leaking. When you screw it on top of the Ram Cummins 6.7 oil filter it will ONLY make contact with the gasket on the filter. Seriously, if it were 1/8 inch larger in diameter it would appear safer. Mine didn't leak, but it's quite an unsettling feeling when you tip it over with that thing. If you drop it I'll have to think it's a leak. This is a small gasket cover on the filter with this tool. look at my photo You can see how much padding is exposed. Works as expected, but why make it so small?
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