German Castol syntec 0w-30 used oil analysis on a G35 coupe




</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Element This Last 2nd to Last Universal
Sample Sample Sample Averages

Aluminum 2 1 2 3
Chromium 0 0 0 1
Iron 5 2 7 11
Copper 5 3 6 7
Lead 2 1 3 5
Tin 0 0 1 1
Moly 4 3 1 75
Nickel 0 0 0 0
Manganese 0 0 1 0
Silver 0 0 0 0
Titanium 0 0 0 0
Potassium 1 0 7 1
Boron 0 1 1 64
Silicon 8 7 9 11
Sodium 9 8 1 7
Calcium 2643 2504 2520 2296
Magnesium 106 111 103 115
Phosphorus 687 660 635 705
Zinc 857 762 789 840
Barium 0 0 0 0
- - -
TBN 2.6

==========================


Test : Vis Flash Fuel AFZ H2O INSOL
@210F Deg F % % % %

.
Shd Be: 58-65 >385 <2.0 0 <0.1 <0.6

.
This: 61.9 415 <0.5 0.0 0 0.3
Sampl

.

PARTICLE COUNT DATA
2 microns or less = 833
5 microns or less = 308
10 microns or less = 85
15 microns or less = 33
25 microns or less = 7
50 microns or less = 0
100 microns or less = 0[/code]</blockquote><font size="2" face="Verdana, Helvetica, sans-serif">EDIT: The ISO Cleanliness Code for this PC data is 15/12.

 

I just purchased the mobil oil from costco and it says FULL synthetic. I remember awhile back ago it use to say part synthetic but now FULL. Are u sure they didnt change it?

 

Mobile 1 was a full synthetic up untill a few months ago. M1 bottles always said full synth as long as I can remember

 

It's categorized as a full synthetic... but it's not actually true pure synthetic. Once Castrol found the loophole in the standards and started utilizing it, Mobil one followed suit and degraded their base stock so that it too was no longer a true pure synthetic.

 

anyone try royal purple... I saw adds stating it increased hp by +9hp.

 

good oil but much better out there. Sure if you have a 500hp car that has been running dino oil, throwing in any synthetic should yield some HP.

 

I use Mobil 1 5000, 5w-30 dino oil.

 

Amsoil 5w30 full synthetic and Amsoil brand oil filter.

 

Amsoil 5-30 Full Syn And Nissan Filter --change Filter Every 3-4 K And Oil Every 15-20k...........

 

is the german 0w30 oil good for use in hot places, ie florida in the summer?
I just use whatever the dealership puts in my car... i know its bad but I do'nt have the stuff at my apartment to change it myself. Is it hard to do on the G?
thanks

 

no not hard at all to change oil on the G, Get under the car remove the bottom engine bay cover (pop out clips) Filter and drain plug right there and No GC is not too thin



copy and paste from the German Castrol FAQ


Is it "thin"? Come on, 0w-30 has to be watery.


NO! Please don't completely buy into that myth.

At cold temps, the 0w weight correlates to cold cranking viscosity.
That means GC will still flow at cold temps. (Which is a good thing!)
At operating temps, the 30 weight is actually close to a 40 weight.
GC is one of the thickest 30 weight oils around.
I don't want to go into too much detail about this here. It can be very confusing.
My point is, GC is not "thin" in most temperatures that we use our cars in.

M1 5w-30 is actually thicker then M1 10w-30 at operating temperature.

 

For those worriesd about running a 0W oil


Thin Oil Myth
Created: April 10, 2006
Last Edited: Never

Disclaimer:
All the temperatures here are in celcius.

Short answer:
0w-30 and 5w-30 can be thicker than 10w-30.

Long answer: Read below.

Really Basic (but not so intuitive) information:

I'm sure we have all seen 5w-30, 10w-30, 10w-40, 20w-50, but what does it mean?
When talking about viscosities, you must state the temperature.

Lets break this up into two categories: hot and cold.

Xw-20, Xw-30, Xw-40, etc (HOT!)
This is your oil's hot viscosity. The viscosity is measured @ 100c.
This number is relative when the engine is warmed up.
The most common unit is cST. The larger the number, the "thicker" the oil.

Examples
A "30" weight is between 9.30-12.49 cST @ 100c.
A "40" weight is between 12.50-16.29 cST @ 100c



"Why isn't 5w-30 or 0w-30 thin?"
I think a real-life example will help.

Lets compare Mobil1 5w-30 to Mobil1 10w-30.

First the Hot (100 c) setting
Straight from Mobil1's datasheet (Looked on April 4, 2006):

5w-30 = 11.3 cST
10w-30 = 10.0 cST

Looks like the 5w-30 is thicker! (Notice how both oils are a "30" weight)


Now lets look at the cold setting
Based on the 5w and 10w specifications:

5w-30 = 6600 cP or less @ -30c
10w-30 = 7000 cp or less @ -25c

Looks like 5w-30 is thinner than 10w-30!
We can conclude that:

5w-30 is thinner than 10w-30 at -25c.
5w-30 is thicker than 10w-30 at 100c.

The above implies that 5w-30 thins out less than 10w-30 as temperature increases.


My main points are:

5w-30 can be thicker than 10w-30.
0w-30 can be thicker than 5w-30.

 

If you read the other thread, I wouldn't use the mobil 1 again. That's what I was using before I read that.