prophet@umcp-cs.UUCP (Dennis Gibbs) (10/03/84)
<> >> DON'T mix oils of different weights. The thicker oil will sink to >> the bottom of the oil pan and just sit there, inhibiting cooling by >> providing an insulating layer (esp air cooled) >> >> Chris Johnson > Do you really believe that? I don't. Do you know where the oil pump > inlet is? Are you sure that thicker oil is heavier than thinner? > That synthetic is heavier than natural? That oil & oil don't mix? > Is your other advice as good? > > Gene E. Bloch Actually, both of you make some good points. Oils of two different viscosity ratings should mix fine, as long as the additive packages are very similar. For example, it is perfectly fine to mix two different viscosity oils of the same brand, and the higher viscosity oil will NOT stay in the bottom of the pan. However, it is a good idea not to mix oils of different brands. This can be especially true with the synthetic oils. The base stock or additive pack- ages may differ enough such that you will not get the best performance from EITHER oil. Most likely, it will be ok, but it is less of a risk if you do not mix differing brands of oil. Dennis -- Call-Me: Dennis Gibbs, Univ. of Md. Comp. Sci. Center. UUCP: {seismo,allegra,brl-bmd}!umcp-cs!prophet CSNet: prophet@umcp-cs BITNET: GIBBS@UMDB ARPA: prophet@Maryland