Hi Josh- Where do you get the oil analysis done? Dave S/V Aries 1990 C&C 34+ New London, CT
> On Nov 22, 2018, at 8:00 PM, Josh Muckley via CnC-List > <cnc-list@cnc-list.com> wrote: > > I use no additional additives in the oil. When we got the boat 6.5 years > ago, the PO had somehow added gasoline to the diesel fuel. The engine would > start easy and run stong-ish until it warmed up. Then act as though air had > gotten in the fuel and die. No amount of bleeding would restore its > operation. During the first year it was difficult to get a feel for "running > good". The first winter we hauled out to have the rudder rebuilt. Second > year was fine but small air leaks and an ineffective means of venting the > fuel system continued to occasionally plague operation of the boat. Second > winter we kept it in the water. In the spring, we started the engine to > bring it over for a short haul. The dipstick blew out and sprayed oil while > the engine continuing to run, albeit rough. We made it to the travel lift > just in time for the engine to die. 1 week later after being relaunched the > engine would turn freely but not start. I found that cylinder 1&2 had low > compression and have since assumed that they had stuck rings. The prevailing > theory is that the water lift muffler push/pulled moist air in/out of the > engine as the boat rocked all winter long. Eventually, the application of > penetrating oil in the cylinders was able to finally work the rings free. > The engine ran well but still showed signs of high crankcase pressure caused > by excessive blow-by. The dipstick could blow loose and the breather would > accumulate a lot of oil. I installed a breather catch can and accumulated > almost 1/4 of the volume in the first year. > > We run about 50 to 75 hours each year and since the stuck rings 4 years ago > the accumulation of oil has subsided. The can is still 1/4 full. I've > rechecked the compression and now all cylinders read high and equal. IMO > poor maintenance by the PO contributed/caused most of the problems I > experienced. My use of quality oil and sample analysis has contributed to > the reversal of the poor operation. > > The only additional additive that I use if Opti-Lube XPD but it is a fuel > additive not oil. I swear by it. > > Here are some videos of mine which you might find useful. > > https://youtu.be/H-GI38vE4hQ <https://youtu.be/H-GI38vE4hQ> > > https://youtu.be/F7KD1_EZmU4 <https://youtu.be/F7KD1_EZmU4> > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > > > On Thu, Nov 22, 2018, 6:38 PM Wade Glew via CnC-List <cnc-list@cnc-list.com > <mailto:cnc-list@cnc-list.com>> wrote: > thanks Josh > I notice Sea Hawk is a 1989 boat. My boat is a 1986 with Yanmar 2GM20F so > we are close in years. No issues with synthetic in older engines? > Also, do you put in any oil additives routinely? > > thanks, Wade > > Oh Boy > C&C 33 MK II > Lake of the Woods > > On Thu, Nov 22, 2018 at 5:30 PM Josh Muckley via CnC-List > <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote: > Yes, fully synthetic. > > Evidently in the early 70's Amsoil started developing and marketing synthetic > oil. Mobile came out and tried to compete but made an inferior product. > Unfortunately the public already knew and used Mobile products so when the > Mobile synthetic didn't deliver on their promises, it made a bad name for > synthetics as a whole. As the story goes, Amsoil came to mobile and proposed > to show them how to make a synthetic so that the technology would be embraced. > > Amsoil has been pioneering ultra efficient oils and extended interval oil > changes for almost 50 years. Under the older engine technology they would > simply have you change the filter and top up the sump, no change until 25,000 > miles. As the engine and filter tech improved they have now shifted slightly > to an entirely 25k run on the same oil and filter depending on the > application. In addition to their extended oil change interval they also > promote oil sample analysis. You can detect all manner of internal wear and > deterioration of the oil and the engine. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Thu, Nov 22, 2018, 6:11 PM Wade Glew via CnC-List <cnc-list@cnc-list.com > <mailto:cnc-list@cnc-list.com> wrote: > is this a synthetic oil Josh? > > Wade > Oh Boy C&C 33MKII > Lake of the Woods > > On Wed, Nov 21, 2018 at 4:16 PM Josh Muckley via CnC-List > <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote: > I use Amsoil products for all my engines. The boat gets 15w40 heavy > duty/marine diesel oil. It had a high TBN of 12. As the acids accumulate in > the oil the TBN will diminish towards 0. I send oil samples for analysis. > Typically in high compression engines which accumulate a lot of soot/exhaust > in the oil, the TBN is the limiting factor as to when the oil is exhausted. > > It's cool to trend oil properties over time and be able to understand the > changes and what they mean about engine health. Kinda like a blood test for > your engine. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Wed, Nov 21, 2018, 3:31 PM Fred Hazzard via CnC-List > <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> wrote: > I have been using Delo 30 in my Yanmar. > What you use? > > Fred Hazzard > S/V Fury > C&C 44 > Portland Or > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > <https://www.paypal.me/stumurray> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > <https://www.paypal.me/stumurray> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > <https://www.paypal.me/stumurray> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > <https://www.paypal.me/stumurray> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > <https://www.paypal.me/stumurray> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray >
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