The Mityvac 7201 is popular and works well.
Make sure that an extractor is known to work well with the applications you have in mind. Not all engines / sump designs work well with extractors.
I purchased this unit awhile back from Amazon - https://www.amazon.com/dp/B084JP4G5...q&ref_=sbx_be_s_sparkle_mcd_asin_0_title&th=1Has anyone had any experience on the four uncle's brand? They are priced well and reviews look decent on Amazon.
Noting which extractors work and those which do not should be a sticky thread.
A thread listing which cars work with popular extractors like the Mityvac 7201 and ones which don't would also be good.
The best one I've ever used. Can work on compressed air or hand pump.
I take the MityVac everywhere I go.