<div><div>It's a bit pricey but I like Royal Purple. I run it in my ATV and I have been running the gear oil in my differentials for years.</div><div><br/></div><div>Jeff H</div></div><br><br>Gary Lindstrom <gary@cs.utah.edu> wrote:<br><br>
I'm a great believer in Red Line MT-90 for gearbox and overdrive.
The MT in the name designates manual transmission.<br>
<br>
I use modern synthetic lube in my diff.<br>
<br>
For engine oil I use Castrol 20W-50 with a dose of Red Line zinc
substitute.<br>
<br>
What do others say?<br>
<br>
Cheers,<br>
--Gary<br>
<br>
<div class="moz-cite-prefix">On 5/19/2013 9:33 AM, Ralph Hottinger
wrote:<br>
</div>
<blockquote cite="mid:11AE926BDD384441A18EC4981B4BB340@ralphLAP"
type="cite">
<div dir="ltr">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial'; COLOR:
#000000">Last week I took my TR4 to Burt Bros. at Kimball’s
Junction for an oil change. While waiting I met the western
rep for Valvoline. He’s also a vintage car owner. He advised
me against using current 85-90 weight grease for the
differential-transmission because of the detergent in the
newer greases and properties. Appreciate any suggestions. How
about oil for engine-Still Castrol? Thanks, Ralph</div>
</div>
<br>
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