Switched oil after 50,000+

[Buzz]

So I (without thinking it through) switched the type of oil I use. After 50000+ miles I decided to go with Valvoline synthetic in stead of M1 (Valv being tru synth) . So did I do a bad thing? I understand that switching to full synth after using on of the faux synth styles is really bad. Does anyone have nay input on this matter?

[SD_GR]

Why do you think M1 is not a true synthetic?

Where is the nearest Valvoline refinery?

Here is an interesting thread for you to read:
-54C Pour Point and high PAO content - Bob Is The Oil Guy

Have you done analyses before/after, or do you intend to? That's the only way of knowing.

The post got me thinking. Which M1 did you use, and which Valvoline have you switched in? Are you using the factory recommended OCIs (after the TSB on oil from SOA)? Oh -- I haven't actually answered the question! IMO no, you won't have a problem.

[Buzz]

Why do you think M1 is not a true synthetic?

Where is the nearest Valvoline refinery?

Here is an interesting thread for you to read:
-54C Pour Point and high PAO content - Bob Is The Oil Guy

Have you done analyses before/after, or do you intend to? That's the only way of knowing.

The post got me thinking. Which M1 did you use, and which Valvoline have you switched in? Are you using the factory recommended OCIs (after the TSB on oil from SOA)? Oh -- I haven't actually answered the question! IMO no, you won't have a problem.

I don't intend to do any type of analysis. As far as the true synthetic debate goes for M1, From what I understand its a modified hydrocarbon derived from dino. Were as Valvoline is entirely man made. How that all matters idk. So im looking over that link right now, thanx for that.
I was using M1 5-30 for the life of the car thus far, I just switched to Valvoline syn power 5-30 last oil change. I just read the website, they claim that they are compatible with all leading synthetic oils, so I guess it cant be too bad.


Looking for anyone with two cents to add

[SD_GR]

Without data conclusions won't be meaningful so you won't know which choice is better.

Either choice is almost certainly going to be at least adequate though, so you are going to be OK.

From whom might Valvoline be purchasing primary materials if they have no refineries of their own?

The link did point out the differences in trying to figure out if an oil is GrIII or GrIV or a mixture of the two from the MSDS vs. using the PDS - but I don't think they or anyone knows for sure if the formulations are not revealed. There are some viscosities that give themselves away though as being GrIV, but 5W-30 isn't one of them.

If your new oil meets SOA's specs for your model year you will be fine anyway IMO.