Oil analysis on my supercharged VQ
Joined: Oct 2003
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From: Keller, TX (DFW)
Oil analysis on my supercharged VQ
For those of you that are interested I thought I would post this here as well...
I just posted my analysis over on my350z in the thread " VQ Oil Analysis and Info". This is post #680 in this thread so here is a direct link to the post: http://my350z.com/forum/6523448-post680.html
Here is the full thread from page 1 which I highly recommend reading through the first few posts ... you will learn A LOT about different oils and what everything really means: http://my350z.com/forum/engine-drive...ysis-info.html
My oil analysis may not mean much to you until you read the first few posts of that thread. The topic starter "Resolute" graciously breaks down most of the Oil Analysis' that are posted to give you an idea of how well your particular oil is protecting your engine. I have been using Mobil1 0W-40 for several oil changes now based on information and data from that thread as it has shown to protect the VQ very well, especially on boosted motors.
I just posted my analysis over on my350z in the thread " VQ Oil Analysis and Info". This is post #680 in this thread so here is a direct link to the post: http://my350z.com/forum/6523448-post680.html
Here is the full thread from page 1 which I highly recommend reading through the first few posts ... you will learn A LOT about different oils and what everything really means: http://my350z.com/forum/engine-drive...ysis-info.html
My oil analysis may not mean much to you until you read the first few posts of that thread. The topic starter "Resolute" graciously breaks down most of the Oil Analysis' that are posted to give you an idea of how well your particular oil is protecting your engine. I have been using Mobil1 0W-40 for several oil changes now based on information and data from that thread as it has shown to protect the VQ very well, especially on boosted motors.
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I went through that thread (well, most of it considering its length). That is extremely useful information. Prior to reading the thread, I had no idea that the type of oil you run depends on whether you are boosted or not.
I was also surprised to see that Mobile 1 0W-40 and and Shell Rotella T-Syn 5W-40 outperform the more expensive oils typically recommended for boosted VQ35 motors. That is great news. We can get better oil protection while at the same time saving a significant amount of money on oil changes.
If anyone has comments about various oils to use or not to use, they should read that thread first. There is alot of data there based on used oil analysis', and the data is pleasently surprising (from the perspective of cost vs. performance).
I was also surprised to see that Mobile 1 0W-40 and and Shell Rotella T-Syn 5W-40 outperform the more expensive oils typically recommended for boosted VQ35 motors. That is great news. We can get better oil protection while at the same time saving a significant amount of money on oil changes.
If anyone has comments about various oils to use or not to use, they should read that thread first. There is alot of data there based on used oil analysis', and the data is pleasently surprising (from the perspective of cost vs. performance).
Last edited by TTG35forT; Nov 7, 2008 at 01:37 PM.
Joined: Oct 2003
Posts: 2,690
Likes: 16
From: Keller, TX (DFW)
I got a reply from Resolute over at my350z about my used oil analysis (UOA):
I think it's safe to say that the extended drain period (9+ months) did not have any adverse affects on the ability of the oil to protect my engine. Regardless, I think I will stick with a 3,000 mile change interval even though Blackstone said I could run longer than this.
Now if someone could find me a place to get M1 0W-40 for less than the ~$6.99 a quart, I will be a happy man! I may try out the Rotella T-syn after this oil change and next UOA to see how it does ... but after seeing the great results from the M1 0W-40 in my motor it's hard to use something else just because it's cheaper.
Originally Posted by Resolute
BeerViper,
I would say that your UOA looks better than most NA engine oil samples, much less the oil results from other FI engines.
Fe, Pb, copper... all the wear metals are very low, which means that the oil is doing a good job of protecting your internal components from wear. The oil is a thick 30wt oil now, but that is to be expected with this forulation. M1 0W-40 is a very thin 40 weight, and many people, myself included, see it as more of a very thick 30 weight oil. In either case, it is still within the recommended grade Nissan suggests and it did its job well. I still say this is the best formulation of Mobil1 you can buy, and the only one I've personally used that I didn't think was a waste of money for engines seeing FI or track day use.
Will
I would say that your UOA looks better than most NA engine oil samples, much less the oil results from other FI engines.
Fe, Pb, copper... all the wear metals are very low, which means that the oil is doing a good job of protecting your internal components from wear. The oil is a thick 30wt oil now, but that is to be expected with this forulation. M1 0W-40 is a very thin 40 weight, and many people, myself included, see it as more of a very thick 30 weight oil. In either case, it is still within the recommended grade Nissan suggests and it did its job well. I still say this is the best formulation of Mobil1 you can buy, and the only one I've personally used that I didn't think was a waste of money for engines seeing FI or track day use.
Will
Now if someone could find me a place to get M1 0W-40 for less than the ~$6.99 a quart, I will be a happy man! I may try out the Rotella T-syn after this oil change and next UOA to see how it does ... but after seeing the great results from the M1 0W-40 in my motor it's hard to use something else just because it's cheaper.
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From: NY
You have a better result than mine.. Mine was fine but my Iron was a little high. Resolute said Mobile1 tend to have high Iron for some reason so I didnt mind. I'm surprised how low your Iron compare to mine... Maybe I drive my car harder than yours
Right now I switched to Rotella 5w40 and I will send a sample to Blackstone when I'm done. If have no problem switching back to M1 0W40..
Right now I switched to Rotella 5w40 and I will send a sample to Blackstone when I'm done. If have no problem switching back to M1 0W40..
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