250r case gasket or not
 

I had to split the cases on my 87 trx and i was wondering if I had to install a new case gasket or if I could get away with just useing sealent like I usualy do on my motorcross bikes. Some of the bikes I have built in the past didnt even come with a gasket from the factory, just yamaseal or some other type of high temp silicone. Experienced input would be appreciated.

Thanks