Is mixing oils bad??

Posted by Muscle racer on Aug 21, 2012; 4:09pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Is-mixing-oils-bad-tp4027655.html

I recently changed my oil. My oil pan broke so most of the new oil leaked out.

I don't want to spend another $25 buying rotella t6 again. Can I get a cheaper oil and mix it with the remaining rotella in the engine, or do I have to drain out all the remaining oil, before putting more in??

Thanks