I have a "topsider" from boatersworld.om which I purchased over a year ago after two decades of bottom oil changes.

I use the topsider when in a hurry (and I do it quite hot). However, as Larry pointed out, it does not allow for inspection.

In the last year I have had two problems, both of which woudl have been identified if I had changed the oil the conventional way.

I now use a hybrid. In the summer, I use the conventional method. In the winter, I use the topsider.

my $.02

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Jovan

'84 (11/83) 190D 2.2 5-Speed; Silver/Blue; Motor No. 00354, 402k mi (340+kmi mine)

'89 Porsche 911 Turbo Coupe; Black/Black; 53kmi
'05 BMW 530i 6-Speed; 302kmi
'19 Range Rover; 30kmi