<div>Been using Mobile 1 Full Synthetic in all engines. Still have more than a half quart left after 6 years maybe. </div> <div> </div> <div>Ihncheol Park<BR><BR><B><I>Tom Simes <simestd@netexpress.com></I></B> wrote:</div> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"><BR>The list is a little quiet this morning, and I'm troubleshooting a<BR>possible delivery issue with AOL, so I thought I would lob in a question<BR>likely to spur some discussion :)<BR><BR>For years I was in the "just run the fuel out and put it away camp". <BR>However, I had the occasion to send an engine back to OS because the<BR>cylinder plating had failed. To their credit, they replaced the whole<BR>engine gratis, even though it was a year out of warranty. Their only<BR>comment on the receipt was to make sure I was using after run oil.<BR><BR>I don't think the plating failure was caused by not using after run, but<BR>I do
know that I replaced bearings in that engine very early in it's<BR>service life and there was internal rust after < 2 gallons through it. <BR>At the time I put in stainless bearings and didn't worry about it<BR>further.<BR><BR>Some things I *think* I know about after run oil....<BR><BR>Hobbico AR is Marvel Mystery Oil (MSDS documents are the same) and it<BR>has no particular anti-corrosion properties. My understanding is it's<BR>basically a combination of solvents in a light carrier oil.<BR><BR>Silicone components in some engines (YS) may be damaged by some commonly<BR>used AR oils.<BR><BR>ATF seems to be popular and has good anti-corrosion agents.<BR><BR>Rislone also seems to be popular - like MMO, lots of solvents but with<BR>some added anti-corrosion agents as well.<BR><BR>Synthetic oils (Mobil 1) seem to be safe for all engine<BR>components (including YS?).<BR><BR>When OS says in their instructions not to put AR oil in the carburetor,<BR>they are specifically
referring to not putting it through the needle<BR>valve / spraybar. Putting AR oil in via the carb barrel is fine, and<BR>something like 1/4 - 1/2 tsp is an appropriate amount.<BR><BR>So, if you are using after run oil, what kind are you using and how do<BR>you keep it from making a mess in your field gear? I've been using<BR>Mobil 1 5W30 and applying it with an eye dropper, but I'm looking for<BR>suggestions.<BR><BR>Thanks<BR><BR>Tom<BR><BR>======================================================================<BR>"Z-80 system stack overflow. Shut 'er down Scotty, the system's<BR>sucking mud" - Error message on TRS 80 Model-16B<BR><BR>Tom Simes simestd@netexpress.com <BR>======================================================================<BR>_______________________________________________<BR>NSRCA-discussion mailing list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR></BLOCKQUOTE><BR>