<div dir="ltr">The "Bob's" are in total agreement other than to mention that the quarts sized StaLube from Napa ends up being quite a bit more expensive than the CarQuest EP90, which comes in gallons. I recycle a lot of it so cost matters.<div><br></div><div>OTOH, I refill a old Stalube quart bottle from my gallon of CarQuest EP90 to use with my hand pump. It's getting old and I should upgrade before the bottom falls out.</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Bob Kramer</div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Apr 16, 2020 at 4:17 PM Robert Lang <<a href="mailto:robertlangtr6@yahoo.com">robertlangtr6@yahoo.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:13px"><div></div>
<div dir="ltr">Hi - There's the spherical washers as Bob refers to, but there may also be yellow-metal for the thrust washers for the side gears. Later cars like the TR6 got fiber thrust washers, but some of us install the bronze ones used in the TR3/4.</div><div dir="ltr"><br></div><div dir="ltr">Can't speak to Spitfires, though.</div><div dir="ltr"><br></div><div dir="ltr">If you have a locker, use the cheap stuff and change the diff oil often! And when you change the oil, examine it closely. That way you stay ahead of any "issues".<br></div><div dir="ltr"><br></div><div dir="ltr">Technically, the proper oils will say "yellow-metal safe" but not all that are safe do say so. <br></div><div dir="ltr"><br></div><div dir="ltr">CRC StaLube is special order at the local NAPA. Perfect for street cars.<br></div><div dir="ltr"><br></div><div dir="ltr">l8R,</div><div dir="ltr">Bob Lang<br></div><div><br></div>
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On Wednesday, April 15, 2020, 5:31:22 PM EDT, Bob Kramer via Fot <<a href="mailto:fot@autox.team.net" target="_blank">fot@autox.team.net</a>> wrote:
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<div><div id="gmail-m_7265836552310610668ydp829245c2yiv1096151339"><div><div dir="ltr">Depends on the diff. The spider gears have bronze cup washers on a stock diff. The Detroit Locket has some bronze rings.<div><br clear="all"><div><div dir="ltr"><div dir="ltr">Bob Kramer</div></div></div><br clear="none"></div></div><br clear="none"><div><div id="gmail-m_7265836552310610668ydp829245c2yiv1096151339yqtfd77650"><div dir="ltr">On Wed, Apr 15, 2020 at 4:22 PM Scott Janzen via Fot <<a shape="rect" href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a>> wrote:<br clear="none"></div></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div id="gmail-m_7265836552310610668ydp829245c2yiv1096151339yqtfd03034">Where is there yellow metal/ brass alloy in these diffs?<br clear="none">
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Sent from my iPhone<br clear="none">
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> On Apr 15, 2020, at 5:15 PM, Randall via Fot <<a shape="rect" href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a>> wrote:<br clear="none">
> <br clear="none">
> You should probably check with Redline; but my understanding is that they do<br clear="none">
> not use the sulfur/phosphorous additive that can damage yellow metal.<br clear="none">
> <br clear="none">
> According to the white paper at<br clear="none">
> <a shape="rect" href="https://www.redlineoil.com/Content/files/tech/Gear%20Oil%20Tech%20Info.pdf" rel="nofollow" target="_blank">https://www.redlineoil.com/Content/files/tech/Gear%20Oil%20Tech%20Info.pdf</a><br clear="none">
> <br clear="none">
> "The extreme pressure chemistry used in many gear oils<br clear="none">
> can be corrosive to brass and bronze used in synchronizers<br clear="none">
> and bushings. Most gear oils are corrosive at<br clear="none">
> temperatures of 200°F. Red Line Gear Oils are non-corrosive<br clear="none">
> up to 300°F and the MTL® in excess of 375°F. A<br clear="none">
> corrosive gear oil can shorten synchronizer life by half<br clear="none">
> and can also contribute to rust problems."<br clear="none">
> <br clear="none">
> I don't have a link handy, but I was reading a research paper just the other<br clear="none">
> day (published in SAE Transactions) about a "dispersed solid borate"<br clear="none">
> additive that reportedly gave greatly reduced wear in big truck rear axles.<br clear="none">
> One of the other Redline documents on their website mentions "solid<br clear="none">
> microscopic particles", which could be the same thing (or not, just a WAG).<br clear="none">
> <br clear="none">
> -- Randall <br clear="none">
> <br clear="none">
> <br clear="none">
> ckproof Gear OIl All Sythetic<br clear="none">
>> <br clear="none">
>> <a shape="rect" href="https://www.biesheuvel.nl/product/58204-75w250-heavy-shockproo" rel="nofollow" target="_blank">https://www.biesheuvel.nl/product/58204-75w250-heavy-shockproo</a><br clear="none">
> f-gear-oil<br clear="none">
>> In general GL5 has a higher sulfur content than GL4 has, but <br clear="none">
>> surely GL4 does contain sulfur. <br clear="none">
> <br clear="none">
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