From what I understand, all automotive oils can be mixed without one breaking down another.  Differing weights included.  Quality, additive package etc. not taken into consideration.  So if one must, one must and can do.  How long one leaves it in there before going back to their better choice of oil is up to them. Dave B.

-----Original Message----- From: Dan N <dn92610@GMAIL.COM> To: vanagon@GERRY.VANAGON.COM Sent: Thu, Jul 2, 2020 10:53 am Subject: Re: Changing oil: Hot, Lukewarm, or Cold

the presence of Synthetic Blend oil means it's OK to mix synthetic and dyno oil but the only thing the public do not know is the ratio... I've heard it's about 75% synthetic and 25% conventional oil depending on the brand.

On Thu, Jul 2, 2020 at 7:46 AM David McNeely <davmcneely40@gmail.com> wrote:

> There are times and circumstances where the exact oil that one normally > uses is not available.  Though the camper uses very little oil, I have had > to add oil on rare occasion.  mcneely > > On Thu, Jul 2, 2020 at 7:28 AM Dan N <dn92610@gmail.com> wrote: > >> there's the Synthetic Blend oil ready to use, no need to mix yourself. >> >> On Wed, Jul 1, 2020 at 9:35 PM OlRivrRat <OlRivrRat@comcast.net> wrote: >> >> >        Posed that question to the Tech's@ Valvoline several years ago >> & >> > got this response > >> > >> > Sure, No Problem,, But Why Would You Want To ~ >> > >> > >> > On 1 Jul , 2020, at 8:32 PM, David McNeely wrote: >> > >> > > Is it ok to mix synthetic and conventional oils? >> > >> >