Porsche 944 race car Elf 10w50

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320
Location
ohio
Below is the results from my 944 race car using Elf Comp 10w50 with a dose of Redline Break-In additive. Oil was in use for 8 very tough hours including one stint with a 3 hour enduro. car is run at rev limit quite often in each sprint race. K&N air and Purolator oil filter. Blackstone results Al 4 Chro 3 Fe 8 Cu 3 Pb 22 Tin 3 Moly 96 Ni 0 Mg 1 Si 0 Ti 0 K 5 Bo 7 Sil 10 Na 70 Ca 1886 Mag 787 Phos 1643 Zn 2055 Bar 0 SUS 70.9 CSt 13.18 Flash 385 Fuel .5 AntiFreeze ? Water 0 Insol .3
 
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1,385
Location
Houston, TX
Nice. I had a 85.5 Spec944 for a while, and another 924S autocross/DE/TT car...oh and the 931 Turbo :) They also liked the LiquiMoly 10w-60 racing oil, great for keeping oil pressure up.
 
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18,449
Location
East of IGO
 Originally Posted By: Solo2driver
Nice. I had a 85.5 Spec944 for a while, and another 924S autocross/DE/TT car...oh and the 931 Turbo :) They also liked the LiquiMoly 10w-60 racing oil, great for keeping oil pressure up.
great bunch of cars.
 

oliver88

Thread starter
Messages
320
Location
ohio
Could have been a few gallons of leaded 110 Sunoco in there. It is usually un-leaded Sunoco 100 race fuel.
 
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15,056
Location
Canada
Like Johnny said, that's what a race oil run should look like - stout oil, but still sheared to heck! Bet that car is a blast to drive!
 
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1,877
Location
Pacnw
 Originally Posted By: benjamming
How can Si be 0?
Si (using OPs terminology) is silver and sil is silicon. Silicon is Si in chemical terminology and silver is Ag.
 
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1,267
Location
Tennessee
Look at that zinc and phosphorous. Great racing oil. It showed it, too. Is this one of those 50 weights that is known to shear down (like Mobil1 0W-40 shears to a 30W)? If not, maybe something that can withstand better shearing could decrease some wear. But really, the UOA looks great for a redlined, hard raced car.
 
Messages
998
Location
CO
 Originally Posted By: oliver88
Any concerns over the 22 PPM of Lead? do I need a higher HTHS oil?
Ive seen other lead readings elevated by leaded fuel, hence my query. I wouldnt worry about it either. It may even stick around for a couple OCIs.
 
Messages
8,756
Location
RI
Why not try a SAE60 racing oil from Redline/Amsoil? A straight weight or narrow range multi weight might be better. Even a 15w50(Gibbs/RoyalPurple) or 20w50(Valvoline racing) might be worth a try. Insoluble looks high. What filter?
 

oliver88

Thread starter
Messages
320
Location
ohio
I have used Brad penn and Redline as well...They both yielded similiar results. This engine was an old "junk yard" block that had over 120,000 miles on it...while clean, it did have some varnish and shaded areas under the cam box...Maybe some cleaning or residual? i rebuilt it in August 2006 and have put some serious racing hours on it since then.
 
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