Quote
=OVERKILL
Sure, I understand that concern. Conversely, the Honda S2000 mill was >100HP/L, spun to north of 9K and required plain-jane 10w-30. The present 6.2L Hellcat mill produces 707HP (114HP/L), and has full warranty on an OTS 0w-40. The GT350 Mustang engine is 5.2L, produces 526HP and spins to 8,250RPM, it spec's a generic 5w-50 and of course also comes with full warranty. There are plenty of other examples with power densities north of 100HP/L where a Euro 0w-40 or similar is more than adequate. Porsche's A40 testing includes extensive simulated lapping of the Nurburgring followed by tear-down and measurements for example.
Just dumping more of something into a formulated lube does not in any way guarantee improvement. Without testing the results are simply unknown. That's the entire reason for the existence of the testing and approval regimens and why OEM spec's and approvals which involve actual operational testing followed by tear-down and analysis are leveraged. Well-funded race teams working with big blenders are doing this on the fly but those without those partnerships nor the ability to do frequent tear downs often depend on a previously developed and tested formula from their blender of choice. Mobil's racing oils, AMSOIL's Dominator line, Redline's racing oils...etc are products that fit well into that market.
Note that I'm not trying to downplay the challenges that the power density and usage profile of your application presents, simply pointing out that 100HP/L isn't a particularly exotic target at this juncture. The lubes used in OEM applications that are hitting at and above that power level aren't requiring "Wizards in a Can" as user Trav has described them in the past, to stay together. GM's own Race Program Corvette's have used either an OTS 0w-40 (M1 0w-40) or 15w-50 (M1 15w-50) and many of these oils are used, as is, at events like the 24hrs of LeMans, Sebring...etc.
Hi OVERKILL,
I would not dare to compare the internal mechanical stress of an little Honda versus a BIG V8 NA revving 7500rpm all day long on a 4 inches stroke,neither to the specific pricey GM engines used for very short distance in the 24 hours of Le Mans (only used to their full potential during qualifying BTW) before rebuild, but, you can if it makes sense to you...
My entire posting here was trying to be informative on this RLI 5W40 developed by Terry Dyson if I don't mistake, and that is providing to this engine of mine better results than all types of Mobil 1, Red Line or Amsoil tested in it, that's all.
To avoid any controversy if someone needs the HTHS and VI of this formula (both impressive), try to pm me.
All the best.
Christian
=OVERKILL
Sure, I understand that concern. Conversely, the Honda S2000 mill was >100HP/L, spun to north of 9K and required plain-jane 10w-30. The present 6.2L Hellcat mill produces 707HP (114HP/L), and has full warranty on an OTS 0w-40. The GT350 Mustang engine is 5.2L, produces 526HP and spins to 8,250RPM, it spec's a generic 5w-50 and of course also comes with full warranty. There are plenty of other examples with power densities north of 100HP/L where a Euro 0w-40 or similar is more than adequate. Porsche's A40 testing includes extensive simulated lapping of the Nurburgring followed by tear-down and measurements for example.
Just dumping more of something into a formulated lube does not in any way guarantee improvement. Without testing the results are simply unknown. That's the entire reason for the existence of the testing and approval regimens and why OEM spec's and approvals which involve actual operational testing followed by tear-down and analysis are leveraged. Well-funded race teams working with big blenders are doing this on the fly but those without those partnerships nor the ability to do frequent tear downs often depend on a previously developed and tested formula from their blender of choice. Mobil's racing oils, AMSOIL's Dominator line, Redline's racing oils...etc are products that fit well into that market.
Note that I'm not trying to downplay the challenges that the power density and usage profile of your application presents, simply pointing out that 100HP/L isn't a particularly exotic target at this juncture. The lubes used in OEM applications that are hitting at and above that power level aren't requiring "Wizards in a Can" as user Trav has described them in the past, to stay together. GM's own Race Program Corvette's have used either an OTS 0w-40 (M1 0w-40) or 15w-50 (M1 15w-50) and many of these oils are used, as is, at events like the 24hrs of LeMans, Sebring...etc.
Hi OVERKILL,
I would not dare to compare the internal mechanical stress of an little Honda versus a BIG V8 NA revving 7500rpm all day long on a 4 inches stroke,neither to the specific pricey GM engines used for very short distance in the 24 hours of Le Mans (only used to their full potential during qualifying BTW) before rebuild, but, you can if it makes sense to you...
My entire posting here was trying to be informative on this RLI 5W40 developed by Terry Dyson if I don't mistake, and that is providing to this engine of mine better results than all types of Mobil 1, Red Line or Amsoil tested in it, that's all.
To avoid any controversy if someone needs the HTHS and VI of this formula (both impressive), try to pm me.
All the best.
Christian
