My experience with Havoline has been a lot defferent than what Mr. Hall's has
been. I have been a mechanic for many years and worked at times as an auto
mechanic. I've rebuilt more than a few engines over the years. I could allways
tell an engine had been run on Havoline as soon as I removed the first valve
cover, in my experience it is the worst for leaving crud and deposits inside an
engine. At least this is what I've seen. Just my $.02 worth.
Bill 66&67 spls in N.M.
"Hall, Phillip" wrote:
> On my roadster I used to 20 inch glass packs. One between the X-member on
> one at the end. It works good and was cheap, but it is LOUD. To solve the
> noise problem I have designed an adjustable exhaust tip. I plan to build it
> in the coming months - I'll let you all know how it works.
>
> A note on oils
> I found some notes my retired boss left behind. There are two types a crude
> oils, naphthenic and paraffinic. As the name suggests, paraffinic oils
> contain paraffin wax which plates out on the inside of motors when subjected
> to heat and mix action. This plating out is called varnish. This can be
> seen on the inside of that aluminum valve cover. Naphthenic oil do not have
> this problem - if this really is a problem. The only oils from naphthenic
> crude is Texico Havaline. I guess this is why he only used havaline 30w in
> his cars. I will look for more published data on this to confirm his
> writings.
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