Another oil pressure question
05-14-2015, 09:20 AM
#41
GM recommends Mobil 1 because mobil payed them a bunch of a money to stick their logo on the fill cap
Diesels may not rev like a conventional motor but most are designed to run on hot forced air (turbo) and haul large payloads. It is apples to oranges but neither a "race" motor or a rightfully purposed diesel truck is a low abuse motor. Heavy hauling can be just as intensive as high rpm.
Diesels may not rev like a conventional motor but most are designed to run on hot forced air (turbo) and haul large payloads. It is apples to oranges but neither a "race" motor or a rightfully purposed diesel truck is a low abuse motor. Heavy hauling can be just as intensive as high rpm.
GM used to allow "synthetic blend" oil in the C7 until LT1's started grenading left and right....then GM backpedaled and now ONLY recommends Mobil 1, and it is required for track use due to the very high oil temperatures in a track environment that regular oil cannot handle and thins out with high heat resulting in severe engine damage. Motortrend got a new Z06 up to over 320 degree oil temp during a recent track test....tell me, would a Duramax diesel running conventional oil survive over 320 degree sustained oil temps on a racetrack?
It just might with synthetic oil though! 
http://www.motortrend.com/roadtests/...06_first_test/
Last edited by ahritchie; 05-14-2015 at 09:27 AM.
05-14-2015, 09:37 AM
#42
Towing heavy, a dmax will see ~245* area oil temps pending OAT. Sustained? Depends on how steep/long the hill is 
Interesting article
http://killerbeeperformance.com/oil-cooling/
And don't forget, oil cooled pistons will cook oil pretty good too.
Ironically, out of the big three, dmax's give oil the easiest life.
Interesting article
http://killerbeeperformance.com/oil-cooling/
And don't forget, oil cooled pistons will cook oil pretty good too.
Ironically, out of the big three, dmax's give oil the easiest life.
05-14-2015, 09:58 AM
#43
Towing heavy, a dmax will see ~245* area oil temps pending OAT. Sustained? Depends on how steep/long the hill is
Interesting article
http://killerbeeperformance.com/oil-cooling/
And don't forget, oil cooled pistons will cook oil pretty good too.
Ironically, out of the big three, dmax's give oil the easiest life.
Interesting article
http://killerbeeperformance.com/oil-cooling/
And don't forget, oil cooled pistons will cook oil pretty good too.
Ironically, out of the big three, dmax's give oil the easiest life.
Does anyone on here run a real oil cooler on their LT1? Not the little "oil warmer" that comes stock on most?
If so, does the cooler oil temps result in more oil pressure at hot idle?
05-14-2015, 10:10 AM
#44
Good points made in the article about the need for oil cooling; however this thread has been derailed enough about duramax diesels.
Does anyone on here run a real oil cooler on their LT1? Not the little "oil warmer" that comes stock on most?
If so, does the cooler oil temps result in more oil pressure at hot idle?
Does anyone on here run a real oil cooler on their LT1? Not the little "oil warmer" that comes stock on most?
If so, does the cooler oil temps result in more oil pressure at hot idle?
I wish, I wanna toss a temp sensor in my oil system at some point but scared to see the results.
Adding in a nice 10an cooler and lines is a expensive process. That and real estate is tight under hood already
05-15-2015, 10:58 AM
#45
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Another oil pressure question I doubt many people with a stockish lt1 has the money to throw in a real oil cooler, especially since these are getting cheaper and most of the time the damage is already done anyway like my car. I'd still like to see the results though, Ill bet there's a few road course guys with vettes that can add info out there.