Raced 94 Corvette LT1-RedLine 10w-40 2800 miles

[sidney004]

Car has 78,000 hard driven miles.It is taken to road race events, this sample represents 16 hours of track use(4200 RPM to 6000RPM at 280F+) The data(which represents 7 years) is listed from newest sample on the left to progressively older data. First data set(Rl 10W-40),Second data set(Rl 10W-40)third data set(Rl 10w-40),fourth data set(RL 10w40),fifth data set (RL 10w-40),sixth data set (RL 10w-30), seventh data set(Amsoil 10w-30 + red bottle Valvoline Synpower), eighth data set(Amsoil 5w-30); Most recent analysis used an Amsoil EAO23 filter(which had been in use thru the last 3 years, 8000 miles, when I dissected it, after having replaced it for this oil change, there was no sludge, very little debris within the pleats, it looked like it had not yet reached its service life). Data sets three thru eight performed by Analytics Inc, Data set one and two performed by Oil Analysers. 3 quarts of RL 20W-50 were added during the 2800 mile change interval, which explains the slightly elevated viscosity.
Oil Analysers flagged the oxidation as severely high and nitration as moderately high, but Dave at Redline says these are normal readings for ester based oils and to ignore it. They also flagged the Nickel and Tin as elevated. I should note that for at least 6 track hours, the engine endured a horrible misfire and was only hitting on 7 cylinders(which has been cured!) I routinely use MMO. I have switched to Redline 20W-50 for this upcoming year.

FE 29.…..24.....26.....33.....30.……..49..….36.....94
CR 2.…...1....…2......3....…2..……...2....…..2......5
NI 9.…….4......2......3......2...……….5...…...7.....18
AL 9.…….8.....16.....6.....9...……….13..…..9......34
PB 38.…..22.....25....35...25..………58...….39.....111
CU 9.……6......8......8......7...……….7...…..7......15
SN 7.……7......23.....23.....6...……..15...…..6......21
SI 24.…..28.....45.....81.....34..…….18..…..16.....30
B 11.……12.....23.....41.....20..…….28...…136.....3
NA 29.…20.....37.....33.....32..……...37...…16.....28
K 0.….4...... MO 824...821....965....908...726.……695....…231....11
P 1164...1086....1056..1145..1049.….1303...1348...1309
ZN 1377..1323...1509...1564...1170...1803...1589...1968
CA 2828..2734...3417...3502...2633...3605...2796...3554
MG 13.…..13.....28...….30.…...27.…...254....837....427
Mil 2800...3000...2200...2000...3800...3000...3100...6000
Fuel T/S% H20 VIS 15.4 15.0 14.5... 14.3.. .16.3...12.1.. .13.5. ..12.8
TBN 4.24..4.82
OXI 85..72
NIT 24...23

 

[rclint]

The one major thing I have to say is when your running top notch oils such as RL, and Amsoil anything you add in aftermarket terms like MMO is going to degrade these oils. If your worried about cleaning these ester based oils may be the best at doing this job than even MMO.. Anyway I don't want to start a MMO battle, I just want to sate that RL and such has been formulated, and advertised for applications in which your using it for... they do not need any help from additives like MMO.

I would call RL if that's what your planning to keep using in your engine ( it looks like you have mostly used RL) and ask them what they think about using MMO, and also make sure you explain to them the application as you have here. Road races with a American V-8 = American HP, using top of the line oils (ester based RL= outstanding for this application) and not only that you have trended the motor using UOA's

You have kept a lot of good info on this engine, and a long trend is something you can possible gather information from especially in this type of application. I'm jealous of your lifestyle myself...

 

[oggb]

Nice!

 

[sidney004]

Originally Posted By: rclint
The one major thing I have to say is when your running top notch oils such as RL, and Amsoil anything you add in aftermarket terms like MMO is going to degrade these oils. If your worried about cleaning these ester based oils may be the best at doing this job than even MMO.. Anyway I don't want to start a MMO battle, I just want to sate that RL and such has been formulated, and advertised for applications in which your using it for... they do not need any help from additives like MMO.

I would call RL if that's what your planning to keep using in your engine ( it looks like you have mostly used RL) and ask them what they think about using MMO, and also make sure you explain to them the application as you have here. Road races with a American V-8 = American HP, using top of the line oils (ester based RL= outstanding for this application) and not only that you have trended the motor using UOA's

You have kept a lot of good info on this engine, and a long trend is something you can possible gather information from especially in this type of application. I'm jealous of your lifestyle myself...


I run the MMO in the gas not the oil.

 

[Mr Nice]

What engine mods do you have ?

 

[sidney004]

Originally Posted By: LT4 Vette
What engine mods do you have ?



Basically stock; Crane 1.6 roller rockers, chip, cat back exhaust(still running cats), larger throttle body. It dynoed at 292 RWHP a couple years ago, so its a long way off the new LSX's but it still holds it own with a good set of tires.

 

[rclint]

I run the MMO in the gas not the oil.

OK I done all that typing for nothing LOL... anyway good job again... I just assumed you run the MMO in the oil, I guess that's one strike for assuming (tonight)

 

[chubbs1]

You must run that thing to the max!! Thank you for the great info!!

 

[steve20]

I love my stock (95) LT-1 as well. A true performer


Steve

 

[SIXSPEED]

Looks like the 10W40 does a good job at maintaining its viscosity. This is one of the oils I'm considering for my 07 GT500. Thanks for sharing.

 

[sidney004]

Originally Posted By: SIXSPEED
Looks like the 10W40 does a good job at maintaining its viscosity. This is one of the oils I'm considering for my 07 GT500. Thanks for sharing.


I did top it off with 20W-50 the last 2 runs but the Redline 10W-40 maintains its viscosity based on my eariler runs. Its an excellent oil for a high output application.

 

[SIXSPEED]

Originally Posted By: sidney004
I did top it off with 20W-50 the last 2 runs but the Redline 10W-40 maintains its viscosity based on my eariler runs. Its an excellent oil for a high output application.

I thought the viscosity for the last two runs along with the 5th run looked high for Red Line 10W40.