40w8

Ok, then send a sample out after 2500 miles to see how it's going, and another one in 3 years.

Carbon8

iTrader: (4)

Got my repot from blackstone. Everything looks like a great break-in.

9krpmrx8

iTrader: (46)

Nice man.

atomicode

First report after switching to Mobil1 5w-30. I started analysis using Castrol 5w-20 then switched to 5w-30 late last year, then switched to Mobil 1 in April. The change I was looking for was better viscosity numbers - but not clear on why the flashpoint is higher - is that because of the synthetic oil or more a function of the oil weight?

9krpmrx8

iTrader: (46)

Yeah synthetic oil generally have a higher flash point. It's look pretty good, I would say the M1 is doing better. the higher chrome is from the housings, caused by the apex seals but not from the actual seals themselves.

Do you premix? Premix may help to slow down that wear but even so the wear in not excessive. I would give the Mobil1 one more sample just to see if anything changes since there is still some old oil mixed with it.

40w8

The flashpoint is higher because on the first samples it says a trace (TR) of fuel. I can tell you changed brand because the Mobil sample has 55ppm boron and moly; two good anti-wear additives.

The insolubles are only .1 , and the silicone (dirt or anti foam additive), is only 9ppm.

My belief is most chrome comes from those aggressive gears where the oil flows.

I think the apex seals blow most all of the chrome it scratches out the exhaust.

Good engine and report, except maybe you had some dirty fuel injectors a few years ago.

You didn't get near using up oil.

atomicode

Yes. Started premixing earlier this year with Amsoil Sabre Pro - 3.5 ounces per fillup (usually around 11-12 gallons). Prior to the Amsoil, I was using lubecontrol FP60 at each fillup - same ratio 3-4 ounces per fillup. Haven't really noticed any differences in general - I'm pulling my plugs which are almost a year old in a couple of weeks to see how they look and I'll compare them to the originals I replaced just to see how they compare.

wankelbolt

iTrader: (21)

It lasting much better than I thought it would. Can't say Swepco 201 is the reason, but it sure isn't a problem.

Swepco makes getting into first difficult for some reason. Happened after changing over and never gotten better or worse. But on-track and smoking-hot, fourth gear is no problem since the switch even after 30k miles on oil. With MT-90 fourth was very stiff when hot, sometimes grinding even. I refilled it with the 201 again.

40w8

^I'd sure like to work at Blackstone.

Those comments are golden talking about the silicone like it's dirt.

I'm surprised they didn't suggest changing the air filter on this trans.

The silicon has to be silicone which is used in oils for anti-foam.

Just a little silicone works as anti-foam; a lot makes it foam more.

wankelbolt

iTrader: (21)

Silicon and silicone are two completely different things. They do actually mean silicon no "e".

40w8

Silicon in oil can be ground quartz (dirt) contaminant or an additive in form of silicone for anti-foam.

Both register on the silicon test.

An example would be Mobil 1 motor oil where a silicon test on virgin oil can register 7ppm, so 7ppm needs to be subtracted off the total for for no more than approx 12ppm net.

I seriously doubt there's 29ppm dirt in the trans sample.

Supīdo-kyō

iTrader: (1)

Hey guys just had oil change done on my car, I could have sworn everyone was recommending Mobil 1 0w-30, so i told them to use that. Now upon further reading and the recent results it seems i should have went with 0w-40

My question is, will 0w-30 be okay or should I just fork over another $25 for the 0w-40, I figured since i just had it done i could leave the new oil filter on, and just swap oils. I live in texas and also do some spirited driving if that matters

Thanks
Best regards
B

40w8

Mobil 1 0w30 is a thin oil for mpg, but way better than 5w20, so drive the **** out of it and don't worry.

Just go buy a jug of Mobil 1 0w40 at Walmart for $25, and use it to keep oil mark on full, then, the rest in 4-5k miles for that oil change.

tpb7463

iTrader: (1)

I use that exact oil (Mobil-1 0w30) for my early spring / late fall weight. There is absolutely nothing wrong with it. If you look back a few pages in this thread, there are a couple other members that have submitted UOA's with that particular oil as well.

40w8

The reason I like the thickness of 0w40 at operating temp is : I've seen less chrome in UOA reports which I attribute to the stationary gears.

The rotary might last just as long on 0w30, and that would be hard to tell, though.

The HTHS viscosity of 0w40 is 3.8, and the 0w30 is below the minimum recommended 3.5 HTHS.

I consider 0w30 a good winter oil for people not getting oil warmed, but for ***** to the wall Texas heat it's 0w40 for me.

wankelbolt

iTrader: (21)

I'm not even going to show what they wrote in their comments since they continue to claim the chrome is coming from the apex seals. Which of course is impossible since they aren't made of or coated with chrome. And any chrome coming off the housings is going out the exhaust...

9krpmrx8

iTrader: (46)

Honestly we don't know exactly what is in the stock Apex seals do we? And chrome from the housing could definitely end up in the oil.

wankelbolt

iTrader: (21)

How, in any kind of volume? It would have to get past at least three seals. Occam's Razor slices through the baloney and points to bearings which are for-sure made with chromium, known RENESIS wear items, and are swimming in engine oil.

9krpmrx8

iTrader: (46)

The same way fuel does.

9krpmrx8

iTrader: (46)

If you say so, it makes sense to me. Engines losing compression often use more fuel and a lot of that ends up in the oil.

maskedferret

iTrader: (1)

Still seeing a lot of chrome; no problems otherwise.

wankelbolt

iTrader: (21)

They've half-heartedly accepted the fact that apex seals are not chrome. They can't quite bring themselves to admit it yet, still say "it could be" coming from the seals, when of course we know it can't. I sent them a handful of links and information, which is why they are going this far, but it's not far enough.

9krpmrx8

iTrader: (46)

Another rotard pointed me to this article. I'm not sure how scientific it is but thought I would share either way since Paimon's Royal Purple results were less than stellar.

Royal Purple – ASH RESULTS - The Full Frame

poacherinthezoo

With only a single sample analyzed it's impossible to make any meaningful conclusions from the tiny variation between the samples he "tested." Still, I applaud the effort.

9krpmrx8

iTrader: (46)

Good point.