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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Motor Oil - Fossil or Synthetic
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<blockquote data-quote="Tom Gaynor" data-source="post: 18694" data-attributes="member: 4034"><p>Trevor Southwell, not nicknamed Clever Trevor for no reason, once took the oil temperature of every Vincent arriving at a big rally. Some had ridden 40 miles, some 400. He presented the information, without revealing the source, to "an oil expert" and asked what he'd recommend. The recommendation was SAE 10, maybe 15.</p><p>The only way to get Vincent oil up to the kind of temperatures that avoid emulsification, is to lag the tank. Or use SAE 10.</p><p>In the glory days of AMF, bringers of "shareholder value" to HD, with the inevitable disastrous results to quality, someone floated the idea that high quality oils caused Harley big-end rollers to "skid", resulting in failure, because the oil was "too slippy". You may already be thinking "how could anyone be so stupid?". I remind you that half the population are below average intelligence. I make no comment on which end of the intelligence spectrum was someone who bought an AMF Harley likely to be. </p><p>This I believe started the belief that thin oils caused cranks to fail, not AMF's piss-poor quality. But a long running, now alas dead, Vincent owner, "The Awful Dave Williams" ran his twin on Esso 0-15 SAE fully synthetic, for thousands of miles, and arguably the UK's leading vintage (essentially pre-1930) Sunbeam guru, is loud in its praises.</p><p>I use straight 30. Now that winter is here, it is time to change to something lighter. I think I'll go the Esso (Exxon) route.</p></blockquote><p></p>
[QUOTE="Tom Gaynor, post: 18694, member: 4034"] Trevor Southwell, not nicknamed Clever Trevor for no reason, once took the oil temperature of every Vincent arriving at a big rally. Some had ridden 40 miles, some 400. He presented the information, without revealing the source, to "an oil expert" and asked what he'd recommend. The recommendation was SAE 10, maybe 15. The only way to get Vincent oil up to the kind of temperatures that avoid emulsification, is to lag the tank. Or use SAE 10. In the glory days of AMF, bringers of "shareholder value" to HD, with the inevitable disastrous results to quality, someone floated the idea that high quality oils caused Harley big-end rollers to "skid", resulting in failure, because the oil was "too slippy". You may already be thinking "how could anyone be so stupid?". I remind you that half the population are below average intelligence. I make no comment on which end of the intelligence spectrum was someone who bought an AMF Harley likely to be. This I believe started the belief that thin oils caused cranks to fail, not AMF's piss-poor quality. But a long running, now alas dead, Vincent owner, "The Awful Dave Williams" ran his twin on Esso 0-15 SAE fully synthetic, for thousands of miles, and arguably the UK's leading vintage (essentially pre-1930) Sunbeam guru, is loud in its praises. I use straight 30. Now that winter is here, it is time to change to something lighter. I think I'll go the Esso (Exxon) route. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Motor Oil - Fossil or Synthetic
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