Delo 15w40 - 2200miles - 2011 Camaro LS3
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Originally Posted By: Torrid
Personally on my reading instead of going thicker I think I'd try the Pennzoil Ultra. I'm just not sure you have much to gain going with 5w40 diesel oil. Yes I know it won't hurt anything, but if you are determined to use a 40wt, I think the Mobil 1 0w40 is the best choice.
I used to claim thicker is better and most seem to think that with GM LS engines. I have an LS1 and while I think Mobil 1 5w30 has been less than I ideal for these engines I think it has more to do with it being Mobil 1 than the weight. With that being said I have Mobil 1 5w30 + 1qt 15w50 and a bit of ZDDP additive. I'm planning to UOA on this one because I'm curious of how it will turn out. Technically the viscosity should be right about 12 at 100c for my blend and also where most LS experts say the sweet spot for these engines are. That could explain your sluggishness feeling.
Originally Posted By: pbm
I'd use GC 0w30 in that engine.
I agree with both of you. I'm thinking an Xw30 weight will be best in this LS engine.
I'll shoot for an oil with 12 @100c. That sounds about right. Thanks for sharing!
Personally on my reading instead of going thicker I think I'd try the Pennzoil Ultra. I'm just not sure you have much to gain going with 5w40 diesel oil. Yes I know it won't hurt anything, but if you are determined to use a 40wt, I think the Mobil 1 0w40 is the best choice.
I used to claim thicker is better and most seem to think that with GM LS engines. I have an LS1 and while I think Mobil 1 5w30 has been less than I ideal for these engines I think it has more to do with it being Mobil 1 than the weight. With that being said I have Mobil 1 5w30 + 1qt 15w50 and a bit of ZDDP additive. I'm planning to UOA on this one because I'm curious of how it will turn out. Technically the viscosity should be right about 12 at 100c for my blend and also where most LS experts say the sweet spot for these engines are. That could explain your sluggishness feeling.
Originally Posted By: pbm
I'd use GC 0w30 in that engine.
I agree with both of you. I'm thinking an Xw30 weight will be best in this LS engine.
I'll shoot for an oil with 12 @100c. That sounds about right. Thanks for sharing!
Originally Posted By: tig1
By the way, you should do two OCs in a row with any oil before doing a used oil analysis. Skipping around like you are doing doesn't give a very accurate used oil analysis of an oil.
I'll start trending my OCI's when I narrow down my oil choices. Right now I'm playing with different weights.
By the way, you should do two OCs in a row with any oil before doing a used oil analysis. Skipping around like you are doing doesn't give a very accurate used oil analysis of an oil.
I'll start trending my OCI's when I narrow down my oil choices. Right now I'm playing with different weights.
Originally Posted By: bigmike
You bring up a good point.. I'd really like to know what oil pressure this car is producing at high RPM with the 15w40.
The Oil Pressure Gauge goes up to 70. The car would idle just above 30. At high RPM's it would get Right under 70. Possibly even hit 70. But my eye wasn't on the gauge that exact moment.
Right now with Delo 5w40 the guage comes close to 70 at high RPM, but not as close as the 15w40. 15w40 almost touched.
5w40 idles just belove 30, or right on 30.
You bring up a good point.. I'd really like to know what oil pressure this car is producing at high RPM with the 15w40.
The Oil Pressure Gauge goes up to 70. The car would idle just above 30. At high RPM's it would get Right under 70. Possibly even hit 70. But my eye wasn't on the gauge that exact moment.
Right now with Delo 5w40 the guage comes close to 70 at high RPM, but not as close as the 15w40. 15w40 almost touched.
5w40 idles just belove 30, or right on 30.
Thank you for your input Torrid.
The autos are L99's...my oil pressure with Mobil 1 5w30 sits right below 30 psi at idle..this is with the oil temp slightly above 200 degrees. I have "free" oil changes every 5k miles up until 30k miles..the dealer gives me 8qts and a filter and I change it myself...after I'm done using my free Mobil 1 I will probably switch to Pennzoil Platinum or Pennzoil Ultra
Originally Posted By: Torrid
I wonder if the pressure had to do with the lower idle speed on autos. My GTO is an auto and I'm at just under 30 in park and about 27 in gear full stop.
For what its worth I agree with what you just said. My 99 z28 was an auto and the oil pressure would definitely drop once in gear compared to neutral or park.
I wonder if the pressure had to do with the lower idle speed on autos. My GTO is an auto and I'm at just under 30 in park and about 27 in gear full stop.
For what its worth I agree with what you just said. My 99 z28 was an auto and the oil pressure would definitely drop once in gear compared to neutral or park.
Patman
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Originally Posted By: Torrid
I wonder if the pressure had to do with the lower idle speed on autos. My GTO is an auto and I'm at just under 30 in park and about 27 in gear full stop.
That is exactly it, I know with my Corvette it's got an idle rpm of only around 550 stock (I've raised it to 650 via tuning though) while the manual trans cars have an idle of around 900 rpm (these are hot idle numbers by the way) So therefore the idle oil pressure on the manual cars will be higher.
I wonder if the pressure had to do with the lower idle speed on autos. My GTO is an auto and I'm at just under 30 in park and about 27 in gear full stop.
That is exactly it, I know with my Corvette it's got an idle rpm of only around 550 stock (I've raised it to 650 via tuning though) while the manual trans cars have an idle of around 900 rpm (these are hot idle numbers by the way) So therefore the idle oil pressure on the manual cars will be higher.
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
Originally Posted By: TurboTravis
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
Actually, I agree...and red lining with an oil that is too thick will stress the engine(could it affect the headgasket among other things), if I'm not mistaken?
Could blow your engine(if it was a lot older) if you raced it with oil that was too thick for it?
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
Actually, I agree...and red lining with an oil that is too thick will stress the engine(could it affect the headgasket among other things), if I'm not mistaken?
Could blow your engine(if it was a lot older) if you raced it with oil that was too thick for it?
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Originally Posted By: ltslimjim
Originally Posted By: TurboTravis
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
Actually, I agree...and red lining with an oil that is too thick will stress the engine(could it affect the headgasket among other things), if I'm not mistaken?
Could blow your engine(if it was a lot older) if you raced it with oil that was too thick for it?
Zero effect on headgasket. He's not going to 'blow' the engine running this oil, there is just no reason at all to use it.
Originally Posted By: TurboTravis
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
Actually, I agree...and red lining with an oil that is too thick will stress the engine(could it affect the headgasket among other things), if I'm not mistaken?
Could blow your engine(if it was a lot older) if you raced it with oil that was too thick for it?
Zero effect on headgasket. He's not going to 'blow' the engine running this oil, there is just no reason at all to use it.
Originally Posted By: TurboTravis
Originally Posted By: ltslimjim
Originally Posted By: TurboTravis
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
Actually, I agree...and red lining with an oil that is too thick will stress the engine(could it affect the headgasket among other things), if I'm not mistaken?
Could blow your engine(if it was a lot older) if you raced it with oil that was too thick for it?
Zero effect on headgasket. He's not going to 'blow' the engine running this oil, there is just no reason at all to use it.
Okay, I only brought it up because of the idea of red lining, hitting the rev limiter etc, with an oil that is too thick?
Originally Posted By: ltslimjim
Originally Posted By: TurboTravis
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
Actually, I agree...and red lining with an oil that is too thick will stress the engine(could it affect the headgasket among other things), if I'm not mistaken?
Could blow your engine(if it was a lot older) if you raced it with oil that was too thick for it?
Zero effect on headgasket. He's not going to 'blow' the engine running this oil, there is just no reason at all to use it.
Okay, I only brought it up because of the idea of red lining, hitting the rev limiter etc, with an oil that is too thick?
Originally Posted By: TurboTravis
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
The 15w40 was just an experiment. I plan on going to a 5w30 or GC 0w30 for the next OCI.
You're kidding yourself if you don't think you can 'redline' the engine with the OEM spec oil
The 15w40 was just an experiment. I plan on going to a 5w30 or GC 0w30 for the next OCI.
One of GM's tests is to run engine for 50 hours at redline! No problem with 5w30.
An LS1 was run at full throttle for 520 hours with no problems.
An LS1 was run at full throttle for 520 hours with no problems.
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