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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 09-09-2013, 02:59 PM
hondo402000 hondo402000 is offline
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Synthitic Racing Oil for BMW engines

so get the JEGS catalog, get to the oil section , short story I purchase some racing oil for my 1971 Triumph TR6- straight 6 engine, high lift cam, JE Pistons, Carillo Rods, roller rockers. bored to 2800 CC, 5 pounds taken off the Crank shaft, AL flywheel. 200HP 187Ft/lbs torque at 2500 rpm, (and for anyone that doesn't know, originally 95 HP and 125 foot pounds torque) Issue= modern oils dont have the ZZDP(zinc) and phosphorus in the percentages that they were back in the 80's which kills these engines, mainly the valve train... so the race oil has the correct amounts of ZZDP and phosphorus but its not Street legal. But like I care, seems the only reason they dropped the levels is because it reduces the efficiency of catalytic converts' So now the question, I wonder if the same race oil would hurt or help our BMW engines, with the catalytic converter taken out of the equation, same 5W30 syn, meets or exceeds BMW oil too

should get tons of opinions here
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  #2  
Old 09-09-2013, 03:19 PM
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thekurgan thekurgan is offline
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From what I understand, the ZDDP was really used for flat tappet protection, and it was sacrificial. I guess the question revolves around the areas where we see intense pressure within the engine. Perhaps the rod bearings can benefit, but I feel moly may be more beneficial there. It's worth running an interval and doing a UOA for results though.
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Old 09-09-2013, 04:14 PM
hondo402000 hondo402000 is offline
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you are correct, the ZZDP is for flat tappet protection and high pressure areas. I dont know the configuration of the cams in BMW engines, round lobes just offset or the geometry of older style cams D shaped type
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Old 09-09-2013, 04:23 PM
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thekurgan thekurgan is offline
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Originally Posted by hondo402000 View Post
you are correct, the ZZDP is for flat tappet protection and high pressure areas. I dont know the configuration of the cams in BMW engines, round lobes just offset or the geometry of older style cams D shaped type
I think these are the lifters: pt # 11337548690

http://www.niparts.com/Graphics/full...%5C1788283.jpg
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Old 09-09-2013, 05:02 PM
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bear-avhistory bear-avhistory is offline
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Racing oil is a short term oil with a low TBN & generally because of its TBN it lacks sufficient detergent for street use. I don't understand why people don't believe what the people who designed & built the motor tell you what type of oil to use.
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Last edited by bear-avhistory; 09-09-2013 at 05:04 PM.
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Old 09-09-2013, 05:16 PM
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Because people are, by nature, curious, questioning creatures
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Old 09-10-2013, 09:38 AM
hondo402000 hondo402000 is offline
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well I have not done anything yet, Plus the oil we purchase at BMW is not made by BMW, and there has to be better oils out there, I wonder if the oil the one guy was using that dropped a valve and destroyed his engine was BMW oil or another brand?
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Old 09-10-2013, 10:35 AM
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Kamdog Kamdog is offline
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Quote:
Originally Posted by bear-avhistory View Post
Racing oil is a short term oil with a low TBN & generally because of its TBN it lacks sufficient detergent for street use. I don't understand why people don't believe what the people who designed & built the motor tell you what type of oil to use.
Who are you supposed to believe, some engineers you don't know, never meet, and who probably don't even speak English good, or some good old internet fellows you can pal around with?
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Old 09-10-2013, 05:09 PM
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Originally Posted by Kamdog View Post
Who are you supposed to believe, some engineers you don't know, never meet, and who probably don't even speak English good, or some good old internet fellows you can pal around with?
If you put it that away, you can't really trust them furiners who don't use inches/feet or quarts/gallons.
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Old 09-10-2013, 05:18 PM
hondo402000 hondo402000 is offline
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Originally Posted by Kamdog View Post
Who are you supposed to believe, some engineers you don't know, never meet, and who probably don't even speak English good, or some good old internet fellows you can pal around with?

can I get an Amen!
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Old 09-10-2013, 05:24 PM
Pilgrim Pilgrim is offline
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Originally Posted by hondo402000 View Post
...the oil we purchase at BMW is not made by BMW, and there has to be better oils out there...
Why in the world would you think that?

The manufacturer spends years developing an engine and testing lubricants which provide optimal service, and you just blow off their recommendation?

Surely there MUST be better oils out there, and you're certainly going to find them on an Internet forum. Everyone knows the people who hang out here know more than BMW does.

(No insult to the knowledge level here, just amazed at the assumptions.)
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Last edited by Pilgrim; 09-10-2013 at 05:48 PM.
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