"The Economist" (believe it or not) on motor oil and engine damage in classic cars
11-09-2010, 03:00 PM
#17
Rennlist Member
I believe it! again, im not a oil engineer, but a racer. for this crew, i race more than anyone here. Im the only one that HAS not had spun bearings and I suspect its for a few reasons, but not for not peggng the rev limiter whenever I can. 
Credibility??? certainly not. folks would rather believe the government and corporate marketing than someone that is actually using the stuff in a way that matters.
Here is my last oil report? when was a racer that didnt have a spun bearing with mobil 1 posted one of these here??
ahhh, never??
Mk
Credibility??? certainly not. folks would rather believe the government and corporate marketing than someone that is actually using the stuff in a way that matters. Here is my last oil report? when was a racer that didnt have a spun bearing with mobil 1 posted one of these here??
ahhh, never?? Mk
Granted, this was about 20 years ago, so not sure if it still applies. But I remember a friend of mine who used to run an SCCA Showroom Stock car, was usually a front runner, and swore by his RedLine racing oil. Before a particular Regional race weekend, he wanted to change his oil, but discovered he'd run out of his RedLine stock. So he contacted his normal supplier who told him he had none to sell, because he was taking it all to SCCA Nationals at Road Atlanta (to sell at a premium of course....). So my friend decides to buy this new stuff on the market, Mobil 1. During the race he ended up with several spun bearings.
I've heard/read that Mobil 1's consumer bottled oil is not the same that's used by pro racers.
I've heard/read that Mobil 1's consumer bottled oil is not the same that's used by pro racers.
11-09-2010, 03:57 PM
#20
Race Car
See the chart? Anything other than 15W-50 when using Mobil 1 and you are just asking for trouble. And look, it isn't even endorsed by Porsche. I laugh every time I see Porsche recommend 0W-40 Mobil One in *all* their cars, including older models.
Dan
'91 928GT S/C
475hp/460lb.ft
Dan
'91 928GT S/C
475hp/460lb.ft
11-09-2010, 04:09 PM
#21
Addict
Rennlist Member
Rennlist Member
11-09-2010, 04:11 PM
#24
Administrator - "Tyson"
Lifetime Rennlist
Member
Lifetime Rennlist
Member
It's posted on their website in a bit easier to read format:
http://www.mobil.com/usa-english/mot...duct_guide.pdf
http://www.mobil.com/usa-english/mot...duct_guide.pdf
11-09-2010, 04:13 PM
#25
Rennlist Member
Thanks, yes, just wanted to get the data out here. Protected PDF, so I had to photograph my screen.
All this ground has been covered before, ad infinitum
All this ground has been covered before, ad infinitum
11-09-2010, 06:33 PM
#27
Rennlist Member
I switched to RP because the purple bottles so match my Iris Blue, and with the GTS you just gotta carry a couple of quarts with you at all times. 
Actually I've tried both Pennzoil and Mobil, idle oil pressure drops below 2 bar with them after a couple of autocross laps. We'll see how the RP does this weekend.
Actually I've tried both Pennzoil and Mobil, idle oil pressure drops below 2 bar with them after a couple of autocross laps. We'll see how the RP does this weekend.
11-09-2010, 09:39 PM
#28
Rennlist Member
11-09-2010, 09:54 PM
#29
Race Car
11-09-2010, 10:29 PM
#30
Rennlist Member
"What is the drain interval with Mobil 1 Racing 0W-50?
Oil drain intervals in racing conditions can vary widely. Depending on specific racing applications and conditions, intervals of 500 miles or more are attainable. When determining the correct interval at these extreme conditions, used oil quality should be monitored as each application and environment can be different.
Can I use Mobil 1 Racing 0W-50 for street driving?
Mobil 1 Racing oils are not recommended for everyday general street use where vehicles use catalytic exhaust converters.
What are the zinc levels in this oil? And how do they compare to other racing oil competitors?
Mobil 1 Racing oils offer boosted levels of anti-wear protection (nominal zinc level of 1850 ppm) for extra engine protection in highly loaded flat tappet engine designs.
I've been using Mobil 1 15W-50 in my race car. How are these new oils better/different?
Mobil 1 15W-50 is a higher viscosity oil that delivers a thick oil film for protection of high performance engines. While Mobil 1 15W-50 can be used and is recommended for both street and track use, the new Mobil 1 Racing oils are not recommended for general street use where vehicles use catalytic exhaust converters. Mobil 1 Racing 0W-30 and Mobil 1 Racing 0W-50 are lower viscosity oils designed to protect the engine under high output conditions in high operating temperatures. Additionally, Mobil 1 Racing Oils offer boosted levels of anti-wear protection (nominal zinc level of 1850 ppm) for extra engine protection in highly loaded flat tappet engine designs like those used in the NASCAR Sprint Cup series.
You say that Mobil 1 Racing oils are not for street use. Why is that? Does that mean I can't use these oils if my race car is also my daily driver?
Automotive street use oils that meet the latest industry standards are required to have a lower level of Zinc and Phosphorus anti-wear chemistries than oils formulated years ago. The latest automotive street use engine oils are designed to be compatible with emission control equipment. Mobil 1 Racing oils are formulated with anti-wear (Zinc/Phosphorus) chemistries at twice the level of automotive street oils to provide enhanced protection of highly loaded valve train systems found in some race engines. Based on the high level of anti-wear chemistries, Mobil 1 Racing oils are not recommended for street use."
This makes it sound like the primary reason it is not recommended for use in street applications is its effect on emission control devices, specifically the catalytic converter. But if you don't have a catalytic converter...
