Question why would changing from 10w30 to 15w40. Destroy a Diesel vw engine?
My westerbeke 33 owner Manuel says 10w30 but previous owner had 15w40. Should I go back to 10w30? Thanks Peter Goonie island C&c 40 Portland me Sent from my iPhone > On Jul 24, 2017, at 1:15 PM, Ronald B. Frerker via CnC-List > <cnc-list@cnc-list.com> wrote: > > A couple of mechanics have told me this as well. If an older car has been > using non-synthetic, then never change to synthetic since it might start > leaks that didn't exist before. > That said, most of our diesels never get the hours on the engine that an > auto/truck get so it might be a moot point. > Ron > Wild Cheri > C&C 30-1 > STL > > > > From: Marek Dziedzic via CnC-List <cnc-list@cnc-list.com> > To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> > Cc: Marek Dziedzic <dziedzi...@hotmail.com> > Sent: Sunday, July 23, 2017 6:10 PM > Subject: Re: Stus-List synthetic oil > > Mike, > > There are some reports that synthetic oil may dissolve some of the residues > left on different parts, which may lead to sudden increase of the oil usage. > Of course, this applies to older engines. The general rule of thumb is that > if you used non-synthetic oils in the past (and did it for years) you may > want to stay with the same kind. If you used synthetics, there should be no > issue switching to non-synthetic. > > My personal experience is limited to a single car in the past, where I > changed from normal to synthetic (the car was driven hard) and I ended up > with an engine that burned about 1-1.5 l (1-2 qt.) of oil for 1000 km. > > I don't believe that you could use oil that is "too good" for the engine. As > long as it is the same grade, it should work fine. > > In your case I would monitor how much oil is staying in the engine (and how > much you burn). > > Good luck > > Marek > 1994 C270 "Legato" > Ottawa, ON > > -----Original Message----- > From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Hoyt, Mike > via CnC-List > Sent: Sunday, July 23, 2017 11:45 > To: cnc-list@cnc-list.com > Cc: Hoyt, Mike <mike.h...@impgroup.com> > Subject: Stus-List synthetic oil > > I had my brother pick up 15w40 for me last week. Changed oil today and when > old oil drained realized he bought synthetic 15w40. Have outing today and no > time to get regular oil. > > Plan to drain and change later this week to non synthetic > > Is this an issue? > > Yanmar 3gm30f > _______________________________________________ > > This list is supported by the generous donations of our members. If you wish > to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you wish > to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you wish > to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated!
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