Best Oil, Filter, and Diff Fluid

**CompSyn** · 10-06-2008, 04:45 AM

Originally Posted by lonewolf37

You can cut and paste your results (wear metals) from Terry...just not his proprietary format/recommendations.

Will do. I am sending a new sample this week. Will post this and prior results. Then an Amsoil fill for comparison.

My nerves could not stand going 50K OCIs. However I will try 10K in my Trailblazer SS. That BioSyn looks promising.

You might not get the best results comparing two different oils with back-to-back UOAs. Reason being is that you are not always able to get every last drop of old oil out of the oil sump, so there will be some cross contamination and mixing of the two different additive packages from two different formulations. If you can, try and hold off on the Amsoil UOA until a second oil change interval. Then you will have a more balanced chemistry inside your engine and end up with a more meaningful comparison.

CompSyn

**Sarge** · 10-06-2008, 06:18 AM

Originally Posted by lonewolf37

You can cut and paste your results (wear metals) from Terry...just not his proprietary format/recommendations.

Will do. I am sending a new sample this week. Will post this and prior results. Then an Amsoil fill for comparison.

My nerves could not stand going 50K OCIs. However I will try 10K in my Trailblazer SS. That BioSyn looks promising.

You will never ever find me recommending extended OCI's for our rides unless thouroughly documented and tested via multiple UOA's. Regardless of the oil manufacturer.

**CompSyn** · 10-07-2008, 06:41 AM

Originally Posted by Sarge

You will never ever find me recommending extended OCI's for our rides unless thouroughly documented and tested via multiple UOA's. Regardless of the oil manufacturer.

Agreed! Many of the enthusiasts here on LS1.com fit the criteria listed below.

"Engines operating under modified conditions are excluded from extended drain recommendations. Examples include the use of performance computer chips; non-OEM approved exhaust, fuel or air induction systems; and the use of fuels other than those recommended for normal operation by the manufacturers." - AMSOIL INC.

**emoFTW** · 10-07-2008, 07:41 AM

good info in this thread! just wat i was looking for

**98T/A.SNAKEATER_** · 10-07-2008, 04:59 PM

Royal purple all the way!!! And ive heard it even gives u a couple more horses ya its a little expensive but its totaly worth it. Use the motor oil and the tranny fluid u wont be disappointed.

**lonewolf37** · 10-07-2008, 07:38 PM

This UOA is RP 5/30 vs Mobil 1 5/30. With RP more shear and more wear. But don't think I am endorsing Mobil 1. PP 10/30 is better oil for less money.
Now lets see how Amsoil stacks up!

**Sarge** · 10-08-2008, 04:35 AM

Originally Posted by 98T/A.SNAKEATER_

Royal purple all the way!!! And ive heard it even gives u a couple more horses ya its a little expensive but its totaly worth it. Use the motor oil and the tranny fluid u wont be disappointed.

We don't buy marketing hype. We have posted real world lab data reflecting Royal Purple sucks. But I have an open mind. Let's see your lab data. Butt dyno doesn't count

**Sarge** · 10-08-2008, 04:36 AM

Originally Posted by lonewolf37

This UOA is RP 5/30 vs Mobil 1 5/30. With RP more shear and more wear. But don't think I am endorsing Mobil 1. PP 10/30 is better oil for less money.
Now lets see how Amsoil stacks up!

Yup....As I have posted my UOA's....RP sucks.