LoanWolf

Yes, I surmised that much....From what I was reading from the experts here, I should try to track down some of the "old" formula Mobil 1 15-50, right? Stay away from the "extended" version which is the new formula, right?

And Steve: I totally agree...Guys like Steve Weiner definitely have superior credibility in my book due to the daily "doing" which is called experience.
Now I am still not clear on what miracle fluid Mr Weiner is advocating

Wolfgang

DJF1

You should try to find the new Mobil 1 15-50 which is a newer formulation than the extended version as far as I can tell. The guys who started the whole thing with the formulation test, they have not tested this oil yet which according to Mobil it has more additives, which means that it should resemble the old SM formulation:
http://www.mobil1.com/USA-English/Mo...1_15W-50_.aspx

If by luck you find the old formula then you are good to go...

FlatSix911

Based on the lengthy discussion - I think the consensus is to go with the Mobil-1 extended performance based on the additional additional additives.

Take a look at the following data:

Mobil 1 Extended Performance 15W-50 is formulated to provide outstanding engine protection for high performance engines and for consumers who want a higher viscosity oil and higher anti-wear performance ( ZDDP) than typically required by modern vehicles.

Features
-Advantages and Potential Benefits
-Fully synthetic formula with Advanced SuperSyn System Prevents deposits and sludge build-up to enable long engine life. Excellent overall lubrication and wear protection performance under all operating conditions.
-Extra levels of performance additives Provides outstanding engine protection at oil change intervals of up to 15,000 miles or 1 year, whichever comes first
-Outstanding thermal and oxidation stability Exceptional control of oil breakdown ; Helps maintain stable oil viscosity
-Provides exceptional engine protection Helps maintain long engine life and is compatible with engine seals.
-Excellent low temperature capabilities Quick cold weather starting for fast protection and extended engine life. Provides less stress on your starting system

Applications

Mobil 1 Extended Performance engine oils are recommended for all types of modern vehicles, including high-performance turbo-charged, supercharged gasoline multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.

Mobil 1 Extended Performance oils provide guaranteed protection of critical engine parts for 15,000 miles or one year, whichever comes first. Excluded service includes: commercial and racing applications; frequent towing or hauling; extremely dusty or dirty conditions; or excessive idling.
If your vehicle is covered by a warranty, follow the vehicle's oil life sensor or the oil change interval recommended in your owner's manual. Proper maintenance practices, including frequently checking the oil level to ensure that the appropriate amount of oil is present, are required to ensure effective performance.

Specifications and Approvals

Mobil 1 Extended Performance meets or exceeds the following industry specifications:
5W-30
10W-30
15W-50
5W-20
ILSAC GF-4 GF-4 GF-4
API SM,SL,SJ,SH/CF SM,SL,SJ,SH/CF SM,SL,SJ,SH/CF SM,SL,SJ,SH/CF
ACEA A1,B1,A5,B5 A1,B1,A5,B5 A3,B3,B4 A1,B1


Typical Properties

Mobil 1 Extended Performance
SAE Grade 5W-30 10W-30 15W-50 5W-20
Viscosity, ASTM D 445
cSt @ 40º C 61 66.1 138 47.4
cSt @ 100º C 11.0 10.7 18.0 8.9
Viscosity Index, ASTM D 2270 169 148 145 171
Sulfated Ash, wt%, ASTM D 874 1.0 1.0 1.13 1.0
HTHS Viscosity, mPa·s @ 150ºC ASTM D 4683 3.1 3.1 4.6 2.7
Pour Point, ºC, ASTM D 97 -48 -45 -42 -51
Flash Point, ºC, ASTM D 92 230 230 228 235
Density @15º C kg/l, ASTM D 4052 0.86 0.86 0.87 0.86

Mark in Baltimore

After talking with Steve, I have decided against Amsoil. I'm still on the fence WRT Mobil 1's 20W-50 V twin motorcycle oil or the EP 15W50.

SR71BLACKBIRD

Perhaps this is the reason all of the sudden there is 15-50W Mobil 1, SM Rated available at Costco down here in WA which I have never seen before and they are dumping it through the discounters as their new Re-formulated version is coming out - just a thought

Thanks for the link Danny - at least there is replacement.

95 C4 993

From here on out, I will use 15-50 Extended life. I will give a report when I reach 150,000 miles. Ok, at the miles I drive my C4 each year, I should have a complete report on how 15-50 Extended life works in lets say the year 2020.

I will say St. Patricks Day 2020 for my report.

My thoughts are if I do regular scheduled oil changes and maintain my car on a regular basis, I should keep the MTBF later than sooner.

Just simple thoughts from a person who just likes to keep things simple when it comes to cars.

Happy St. Patty's Day!!!

scat

Relax.Mobil 15-50 EP is just fine.Technology is getting better every day...Anyone is willing to switch back to mineral oils from 20 years ago?Just do your regular maintenance.
Thank you.

LoanWolf

All right, sounds like Mobil 1 15-50 extended performance is still the ticket...any recommendations on where to purchase it? I live in SoCal

And: Thanks everybody for your replies!!

Wolfgang

Mark in Baltimore

Are you a chemist or in the petroleum industry? Just curious about the basis of your assertions and how they can predict the outcome of wear in our air/oil-cooled engines.

SR71BLACKBIRD

I am worried about changing my oil :

Here is what I have left 6 qts of Mobil 1 Extended Performance** 1315 1428 15w50 SL SYN

and the rest is Mobil 1 Extended Performance**906 1024 15w50 SM SYN .

so with my 6 qts of SL Mobile 1 I get 1428 ppm (Zinc) x 6 = 8568

and my 4 qts of SM Mobile 1, I get 1024ppm(Zinc) x 4 = 4096

Total = 12,664 / 10 = 1266.4 ppm (Zinc)

So if I mix my old SL with the new stuff I will get 1266.4 ppm (Zinc) - from my simpleton thinking - Am I okay to do my oil change?? This is driving me nuts - please comment.

Thanks


Scott

Rick Lee

I have an oil change to do next weekend and I have one 5 qt. jug of Mobil 1 EP 15/50 in the garage. Is there a newer version of that I should avoid? I'm confused here. BTW Mark, I have a BMW 1150R (air cooled) bike and use Mobil 1 15/50 in it. I would like to get the same oil for the bike and 993 if possible and a lot of the BMW bike websites say Mobil 1 15/50 is the stuff to use. But if the V-twin 20/50 is better for the 993, I'll look into it for the bike too.

Carrera Mike

Gents,

When I had my '97 993(from 03 to 04), the owner's manual called for 10W-40. I could only find that grade in Synthetic here in VA from Castrol Syntec which is in SL form. Coincidentally, with my '02 996, the owner's manual also specificies 10W-40 grade for normal use. So until now, I'm using SYNTEC 10W-40, which is still available in SL.

95 C4 993

Decisions, decisions, decisions.....

Mark in Baltimore

Rick,

Are you saying that BMW does not recommend the Mobil 1 V twin 20W-50 but, instead, gives the nod to the Mobil 1 EP 15W-50?

Rick Lee

I don't know what the factory manual says (I never read those things). But I know the consensus on the BMW bike boards is that plain old Mobil 1 15W-50 or 0W-40 we use in our Porsches is their preferred oil for their bikes. The V-Twin stuff sounds good, but for the price difference, I think I'll stick with 15W-50.