Mobil 1 Engine Oil Technology

buster

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Camshaft photo on page 16. Looks kind of worn doesn't it?
 
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Thanks Buster, Fun read. I have 0w-30AFE going in the Yaris next OCi. Complaint-In the piston deposit test, the lighting of the comparitive photographs is substantially different and is not comparable. Where is the data ?(grams of deposit/sample).
 
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I thought the cam looked Ok. It is hard to see exactly what is there, but to me it seemed like the color change was mainly from some light varnish being rubbed off.
 
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There looks like some pitting on the flat part of the lobe. That M1 must be eating away at the iron.
 

buster

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 Quote:
OEMs have designated Las Vegas Taxi Cab Fleets as the Gold Standard for field performance evaluation ? Extreme Environment – Cold, Dusty Winters (<30oF/-1°C) – Blazing, Summer Heat (>115oF/46°C) ? Severe engine oil service – 22 hrs/day operation – Constant use of Air Conditioners – Average speed of 14 mph – Stop & Go traffic – Long periods of idle time – 6,000 – 7,000 miles / month – Current testing includes 25K Mile ODI ? Field test savvy transportation industry – Variety of OEM models available – Many industries conduct testing (tires, coolants)
 
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 Originally Posted By: CharlieJ
There looks like some pitting on the flat part of the lobe. That M1 must be eating away at the iron.
Thats a fully rollerized cam lobe - you can tell by the 'fat' nose and flat flank; must be due to periodic roller "skating" - a problem with some synthetics. Actually, it dosn't look too bad for 15K oci. Of course. it was the best looking sample engine out of 50! Summing up this coolaide presentation: No numerical or statistically relevent data published = ABSOLUTELY nothing proved.
 
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 Originally Posted By: ARCOgraphite
 Originally Posted By: CharlieJ
There looks like some pitting on the flat part of the lobe. That M1 must be eating away at the iron.
Thats a fully rollerized cam lobe - you can tell by the 'fat' nose and flat flank; must be due to periodic roller "skating" - a problem with some synthetics. Actually, it dosn't look too bad for 15K oci. Of course. it was the best looking sample engine out of 50! Summing up this coolaide presentation: No numerical or statistically relevent data published = ABSOLUTELY nothing proved.
Pretty much the same with most BITOG comments.
 
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