Z06 oil analysis results
So like I said, you cannot compare wear numbers on a fresh engine to one that's got more miles on it.
I guarantee you that if 10 people on here use Royal Purple, and 10 people use Redline, and post their UOA reports, the superiority of Redline will be quite clear.
But I have a feeling I'm never going to convince you of that, and you definitely will never convince me that Royal Purple is better. I've seen far too much evidence to the contrary. So we'll just have to agree to disagree here. I still wish you'd make the drive down to Toronto to hang out with us Toronto f-body guys sometime! I promise not to talk about oil when you're here!

We'll be at St.Thomas dragstrip tomorrow for our first of four events (next one after this is July 19th-you should make plans to come down!)
I'll definitely make it down there one time this summer for an event. The 19th may be do-able. I have to check the schedule for the dates I'm playing with Nanette Workman. Ever heard of her? She's the high voice on the Stones' "Honky Tonk Woman" Her and Madeleine Bell did all the backup vocals on the "let It Bleed " album. Keep me posted on any other events that may be happening too. PS: We'll settle it al with a heads up race.


Shane
...Why worry ...when the rear view mirror falls off in your hand, it is time to buy another car... hopefully at that point in time you have not just changed your oil...
I did a heads/cam install on a 90k+ car the guy religiously used RP (unknown weight). I almost refused the job because of the reddish/purplish coating and sludge buildup in the motor.
My personal car, bought brand new. 1st oil change at 1200 miles to Mobil 1, 5W30. Install cam at 46k, everything looks perfect. Install heads, bigger cam at 63k, everything looks perfect. Get saucy with 7200 RPM shift points, #2 rod decides to trim the crank down .010 (bolt stretched badly), rest of the motor looks perfect.
So, in my highly scientific experience (ie. blank stares looking at engine internals while swapping parts) I'd say the two motors with RP looked like CRAP, while the M1 motors looked great. I guarantee I won't waste my money on RP, but wouldn't mind hearing what's equiv/better than M1 ... Also, what viscosity is recommended for a Texas climate on a stock bottom end? How about a built motor?
The Best V8 Stories One Small Block at Time
I saw exactly the same thing on my LT1 - which is why I will not run royal purple again. Ran mobile 1 for ~ 60k miles (until they switched the formulation last time), and ran RP for 35k. I changed the oil/filter every 3k or less, and when I pulled the motor it seemed like almost every surface was anodized/coated with a purple-brown sheen. The valvecovers/timing chain cover/heads(top) never looked like that with Mobile 1....
I will see if I can dig up an old oil analysis, but nothing was abnormal/notable - no coolant, fuel, low insolubles.
The motor itself looked good (bearings/cylinder walls) - but good god did RP leave some sort of crap coating on everything (it didn't seem like sludge as it was very thin and uniform, and seemed almost bonded to every metal surface).
Silicon - 9.0
Potassium - 7.1
Sodium - 3.7
Fuel% - <2.0
Glycol%- <.02
Water% - <0.1
Nitration - 50
Boron - 0.0
Calcium - 2627
Magnesium - 7.7
Moly - 141
Sodium - 3.7
Phosphorous - 1060
Antimony - 2.7
Zinc - 1888
Vis @ 100C - 14.54
Oxidation - 35
TBN - 7.38
Iron - 3.1
Nickel - 0.5
Chromium - 1.0
Titanium - 0.2
Copper - 104
Aluminum - 4.6
Tin - 0.0
Lead - 3.0
Silver - 0.0
Robert, how do you figure these engines won't go 250k? I think that if you stay relatively close to stock, there is no problem for either the LT1 or LS1 to go this far. I'm hoping to get this amount of mileage out of my LT1, that way I can save my $$$ for the 97-99 C5 I plan on buying in a few years. And I plan on getting 250k or more out of that engine too.
Robert, how do you figure these engines won't go 250k? I think that if you stay relatively close to stock, there is no problem for either the LT1 or LS1 to go this far. I'm hoping to get this amount of mileage out of my LT1, that way I can save my $$$ for the 97-99 C5 I plan on buying in a few years. And I plan on getting 250k or more out of that engine too.



