4SHIZZIL

iTrader: (10)

This is by far is the only thread that keeps getting better and better with time! Mad props for setting a solid base of information. If only I could add such knowledge in another areas of our cars...lol

QuadCam

iTrader: (8)

Will,

you are correct. the 1st sample in my results are from Motul 300V 5W40. the other 2 analyses are both Rotella T-Syn 5W40. Also, thanks for recommending this oil. You originally recommended it as a cheap oil to put in my motor while I was waiting to get my 300V results back. Once I got the 300V results back, I chose to leave the ROtella in the engine and give it a full 3000+ mile test. When those results came back, I decided to stick with the Rotella. I was planning on trying the Mobil 1 Turbo Diesel Oil, but why? This Rotella T-Syn is turning out to be a great oil. I can't complain about any of the results!!!

Resolute

iTrader: (2)

Glad the information in this thread has been put to good use. I remember now, after going back through the last few pages, about recommending this oil. I had recommended it to several members as a great oil to try in their TT engines, but only Gurgen had done a UOA. I'm glad you have done two of your own to post up, especially with the newer formula. There are some who think the new CJ specs aren't as good, but the fact is the CJ spec oils still have all the wear protection and high temperature performance as the previous specs, while running cleaner. Your sample should help clear the air about those who have doubts with the newer oils. If not, Lubes N' Greases just did a huge article on the specs change, and over the last year of use, UOA's from fleet diesels running the newer CJ spec have seen no degradation in performance compared to the previous CI-Plus specs. I can't say that the M1 5W-40 would be better, but it would be interesting to see a comparison. Of course, the T-Syn is almost half the cost.

Will

Nederlander75

Could the Moly be from upper cylinder wear, rings? Ive seen this as the case in other engine designs where Moly is part of the Chrome alloy. Guess it could also be assembly lube from your recent mods.

Resolute

iTrader: (2)

There is more chromium than molybdenum in 4130, so the moly isn't from the rings. If there was more chromium, then that could be a possibility. As it is, I would think it is from residual oil.

Will

jonnylaw

iTrader: (3)

This thread was a great read.

I've used two cycles of motul 8100, but decided to switch to mobil1 0w40 after reading this thread.

Good news was Pepboys had a sale: $29.99 for 5 qrts. of Mobil1 0w40 and a Mobil 1 filter! Sure beats the $50+ for the Motul changes with a OEM filter.

Zero+4

iTrader: (9)

AWESOME THREAD... subscribed

Im having my oil changed later with German Castrol 0w30 & will be doing an oil analysis down the road.

My car is an 04' Enthusiast, 30k miles mostly highway, some city, & some hard driving (a fair mix).

Scipher21

So what do you guys consider "oil consumption."

Like when its time to change your oil, theres barely any on the stick? or theres half of what you put in it, on the stick?

Resolute

iTrader: (2)

There's a sticky on VQ oil consumption that's dedicated to this problem. "oil consumption" seems to depend on the mileage and use, and what version of VQ you have. Check that sticky out, the question's a bit OT for this thread.

Will

Scipher21

oh sorry i didnt see that one im no good at this :X.

sibble

Hey Resolute, got a couple questions for you.

I'm sure at least one of these has been answered before, but my buddy isn't going to take my research as a final answer.

OK so, from looking at the UOA's, I can see that Castrol 0w30 gives better results than say Mobil1 5w30 (for wear.)

My buddy saw on TV that in Nascar, they qualify the cars using a 0w30, and run them on the track with a 5 or 10w30.

So 2 questions, is a 0w30 good to run all year-round (hot summers), and why do you think they qualify cars in Nascar with a 0w30, and then change to a 5 or 10w30?

Mainly, he wants to know that if it's better to use an oil where the numbers are closer to each other (0w30 vs 10w30) in the summer, even though we see better UOA's from a 0w30.

Resolute

iTrader: (2)

I wonder where he heard that Nascar teams qualify with a 0W-30? I didn't know they used a 30 weight for qualifying.

In any case, yes, you can run a 0W-30 year-round without an issue.

It used to be that straight weight oils were the most stable, because they didn't have any viscosity index improvers in the formula, which are susceptible to shear.

As time went on, ad multi-grade oils became the norm, people realized that oils with low viscosity spreads would use less VII's than oils with higher viscosity spreads. Thus, a 10W-30 was seen as more shear stable than a 5W-30.

Now, chemistry has made these notions obsolete. In fact, a recent SAE technical paper identified several 0W-xx oils as being the most shear stable, over traditional 5W-xx and 10W-xx oils. This is because a 0W-x oil will use higher quality base stocks that don't need any VII's to achieve the grade. German Castrol 0W-30 is a prime example. The PAO base stocks used in this oil have a natural viscosity index to achieve the 0W-30 oil grade all on their own, with very little VII's included in the formula. Mobil1's 0W-xx oils are the same way.

Now, why Nascar would qualify with a 0W-30 and run a 10W-30 in the race, makes no sense to me. Both of those are 30 weight oils and the viscosity will be about the same for both of them. I thought I remembered reading that most of the teams qualified with a 20 weight oil. Of course, with sump sizes measured in gallons, I would think they could run any thing they wanted and be just fine. Those Nascar sumps hold a TON of oil.

Will

sibble

Awesome, thanks for the info Resolute

EDIT: I will follow-up and get more info on where he heard that, I know he said he heard it on TV during a race, but I'll get more info.

j.arnaldo

THANK YOU so much!

Teufel

iTrader: (1)

Resolute = Opathal's Hero


















LOL

hodahkwen

Here's my UOA with Pennzoil Platinum.

Resolute

iTrader: (2)

Thanks, I'll add it to the average for PP 10W-30.

Will

03aeroZ

iTrader: (11)

hey resolute, is there a time frame that one should follow for oil changes (the usual 3mos still apply for synth like the castrol euro?), or should mileage be the only factor? thanks in advance.

Resolute

iTrader: (2)

I'll let you know for sure when I get my UOA done. Over one year on the oil, but only 6k miles.

Will

03aeroZ

iTrader: (11)

dang....i was worried about 6mos. yeah, let me know