Synthetic Oil in HP500
12-11-2009 | 09:07 AM
#11
Charter Member # 545
Joined: Dec 2000
Posts: 2,152
Likes: 2
From: Port Tobacco MD/Cape Coral Fl
It was Teague's article about roller lifters skidding across the cam lobe that started alot of this talk. In a more recent article he was quoted as saying he was talking about solid lifter roller's that were running high spring pressure. Guess who sponsers Teagues race boats now????
12-11-2009 | 01:51 PM
#13
Registered
Joined: Jun 2007
Posts: 271
Likes: 0
From: Texas
You'll be just fine. Just make sure what oil he used. It should either be the Dominator 15w-50 Racing Oil or the 20w-50 High Performance Oil (ARO). Those are AMSOIL's highest zinc and phosphorus oils, which are specifically designed for the rollers. If you have any more questions feel free to shoot me a PM. I can you get some data sheets on any and all products also.
I read the article again last night. It was crane that stated no synthetics for the hydraulic roller cams. Teague did the testing for Amsoil and stated that the Dominator was the oil to use.
12-14-2009 | 07:29 PM
#16
Registered
Joined: Feb 2001
Posts: 484
Likes: 26
From: Elizabethtown KY USA
Just A Thought
If synthetic oil is so slick that a roller rocker will not turn as designed then how can there be enough friction created to form a flat spot on either the cam lobe or the lifter roller?
Just a question I have!
Just a question I have!
12-14-2009 | 08:14 PM
#17
Registered
Joined: Jul 2003
Posts: 633
Likes: 0
From: Watkins Glen
I believe a good mineral based oil helps facilitate the necessary break in process. Then switch to a synthetic. Any thoughts on this? The contradiction is Volvo. As we know Merc and Volvo are using GM engines. Merc says to use there 25W-40 mineral based or Dura blend. Volvo says only there Volvo full synthetic 30W. wonder what GM says... Merc says it is normal to consume oil during the break in period, we all know the rings need to seat. You would think using a full synthetic would extend that break in period. In a production block i have not seen any noticeable oil consumption in either the synthetic or mineral oils during break in. Except some Big Blocks when run hard.
So the question: For break in say 10-20 hours (engines that will not be torn down in 250 hours or more) Synthetic or Mineral
So the question: For break in say 10-20 hours (engines that will not be torn down in 250 hours or more) Synthetic or Mineral
12-14-2009 | 08:49 PM
#18
Registered
Joined: Feb 2008
Posts: 715
Likes: 0
From: Michigan
I believe a good mineral based oil helps facilitate the necessary break in process. Then switch to a synthetic. Any thoughts on this? The contradiction is Volvo. As we know Merc and Volvo are using GM engines. Merc says to use there 25W-40 mineral based or Dura blend. Volvo says only there Volvo full synthetic 30W. wonder what GM says... Merc says it is normal to consume oil during the break in period, we all know the rings need to seat. You would think using a full synthetic would extend that break in period. In a production block i have not seen any noticeable oil consumption in either the synthetic or mineral oils during break in. Except some Big Blocks when run hard.
So the question: For break in say 10-20 hours (engines that will not be torn down in 250 hours or more) Synthetic or Mineral
So the question: For break in say 10-20 hours (engines that will not be torn down in 250 hours or more) Synthetic or Mineral
12-16-2009 | 07:15 AM
#20
Registered
Joined: Nov 2005
Posts: 4,554
Likes: 3
From: Fredericksburg, Va
I break in all mine with rotella, then switch, but yes several GM engines now come with moble 1 from the factory and specified on the oil cap, corvettes, camaro's and I just bought a STS and they specify on that as well....Rob
