Please send me your email address as I cannot post attachements through this site.

Best regards,
Jerry

Please send me your email address, I can't post attachments.

[email protected]

I'm running an upgraded 502 efi at 500 hp. Is mobil 15w-50 gold cap not the greatest of oil for it anymore? Also ran the mobil filter last year. Should i go to something different?

Cloudmaster,

Please try Aerospace Lubricants, Inc. ProDrive Type III. It is a 15W-40 oil, that will give you far better protection than Mobil product 15W-50 Gold Cap.

Pricing is $9.95 per quart and $31.84 per gallon. Complete technical data is availble on our website. All of our oils are, of course, 100% PAO base stock, with a proprietary additive package. In general, you can go with a significantly less viscous oil, while maintaining the same level of protection.

I would encourage you to ask other forum members their opnion of our product line. Even though we do not have a huge presence in the marine market, I'm sure that some of the members have experience with Alisyn engine and gear oils.

I have supproting documentation that is in PDF format, but since I am a new forum member I cannot post it with my current clearance.

I would be pleased to follow-up with you if you email me at:

[email protected]

Best regards,
Jerry

20W-50 M-1 V-twin is much better as is Redline 20W-50.

Vandy who is a distributer said that Mobil is improving 15W-50 M-1 so we will have to wait and see what it is like when it arrives on market.

Some people may know Ali-Syn as packing and labeling Sidewinder Sprockets's chain lube.

Ken

Hydro I think you have an oil fetish... what would that be called?:D Thanks for the info. Oh yeah, what lube do you recommend for doing "the nasty?":evilb:

The sheep don't care.

http://www.mobil1.com/USA-English/Mo...1_15W-50_.aspx



So we had Redcap 15W-50 Mobil-1 which was Group IV base and lots of ZDDP...a great product,

Then came M-1 15W-50 EP GoldCap in several formulations which had wear related problems as they went to a GRP III base...but didn't tell anyone...and tried to reformulate it and then gave up and is no longer making it.

Now we have Mobil-1 15W-50 Silver Cap. This has a high PAO Group IV base content with more than adequate levels of ZDDP for the hottest offshore rigs. Much improved VI.


Bottom line....USE IT...as it is great stuff.....a g a i n. :evilb:

Here ya go! Mobil-1 15W-50 Silver Cap! The Lone Ranger is Back!


Mobil 1 15W-50 Specs look good...

SAE Grade 15W-50 Active cleaning agents Actively controls deposits and sludge build-up to enable long and clean engine life
Outstanding thermal and oxidation stability Reduces oil ageing allowing extended drain interval protection
Controls oil consumption Less hydrocarbon pollution and oil make up due to evaporation
Race Proven Technology Performance reserve in the most extreme driving situations
High Viscosity Index and Supersyn Antiwear Technology Excellent overall lubrication and wear protection performance for all driving styles and conditions

Viscosity, ASTM D 445
cSt @ 40ºC 125
cSt @ 100ºC 17.4
Viscosity Index, ASTM D 2270 153
Sulfated Ash, wt%, ASTM D 874 1.3
HTHS Viscosity, mPa-s @ 150ºC ASTM D 4683 5.11
Pour Point, ºC, ASTM D 97 -45
Flash Point, ºC, ASTM D 92 230
Density @15 ºC kg/l, ASTM D 4052 0.864

I am assuming the GoldCap is still safe to use with regular oil changes (20hrs)? I sure hope so becuase I have a stock pile of the stuff in the shed...

Here are the issues we have seen discussed on oil threads...

-15W-50 Gold Cap Base stock is predominately non-PAO and it shears down to a 10W-40 quickly and the relatively low ZDDP levels causes premature wear in offroad applications. In these situations 20W-50 Kendall has been shown to perform better.


If I were using it I would add a can of STP oil treatment to every 5 quarts to boost the ZDDP level and also STP Oil Additives has viscosity improvers...which Gold Cap also needs.

Just for the record...if you go back about a year or so on this thread you will see me comment that I always felt Gold Cap was crap and it needed STP Oil Treatment to boost ZDDP levels and improve viscosity @ 100*C....

Mobil...I got to tell you...Gold Cap was a real screw job to your loyal customers and if Mobil didn't develope Silver Cap.. Porsche' was going to pull away from Mobil products. That says a lot!

...Fortunately Silver Cap looks a like a good product for offshore and offroad applications.

So leave it alone...please...:D

Thanks Hydro..By the way I see they have the SilverCap in stock at Walmart @ $6.59 Qt.

New M1 Silver...Good ZDDP? Low/No Moly? Is VTwin still better? Thanks

Silver Cap (from what we have seen so far) is a blend of Grp III/IV but most mostly IV. Good ZDDP and it has moly for better gas mileage. Red Cap was 100% PAO GRP IV. So Silver is better than Gold EP which eventually became a GRP III product... but not quite as good as Red which was about equal to V-Twin.

V-Twin has a ton of ZDDP as usual and GRP IV/V base. So it's very heavy duty. No moly.


Silver I feel will be good out to 40 hour drains and get us what we need in offshore engines for a decent price.

With Mobil 1 15W50 jumping all over the board, I'm looking for something else to go to that is readily available. I can pick up 20W50 Royal Purple at my local NAPA for $7/quart. Has it been 100% confirmed if this is a Group IV or better base stock or is it too a Group III? I can get V-Twin but is more difficult to obtain and I question if it is overkill for a 496 MAG in a runabout.

Is Moly and a roller cam still a no-no?

M-1 Silver Cap 15W-50 The NEW stuff is something I would stake my reputation on as being excellent from the info I have researched and preliminary tests we have seen to date. It is probably the old Red Cap formulation or close to it many are saying. Excellent. Use with confidence in most any offshore application.

15W-50 Gold Cap EP is something Mobil ought be ashamed of. It needs a can of STP to boost viscosity and ZDDP.



RP is probably PAO but we can not confirm this.

We do know that all Redline priducts continue to be GRP IV/V.

Redline is amazing stuff. :drink:

Teague says not to use a product with moly as it flat tops rollers...the rest of the world does not buy into his theory it would seem.

I can see some logic however using a low moly product for break-in.

Thanks, Hydro.

What is a really "slick" 20W-50 synthetic?

Amsoil 20W-50 Severe Service Racing.

It will give you a bit more HP as it has lots of moly and friction reducers in it.

Be sure you use it on an engine that is atleast broken in say 25-50 hours.

Found 5 quart jugs of new 15W50 silver cap Mobil 1 at my local Wally World for $23.62/jug.

Cool.

I do believe that Mobil did not make this product to conform to GF-4 specs (reduced phos and zinc) as it is an "offroad formulation".

Anyone know for sure yet?

I think M-1 Silver Cap is going to be great because it specs out very similiar to 20W-50 V-twin at near 1/2 the price!

Silver Cap/V-Twin

Cst 40*c 125/130

Cst 100*C 17.4/17.7

VI 153/150 (note 15W-50 EP VI was only 145) Improved film strength and less shear down vs. EP

FP 230*C/270*C

They are near identical products in the above comparisons with the SilverCap being $4.28/qt cheaper vs. v-twin at Wally Land in bulk.

Now we need the ZDDP levels as nobody ran them yet...though they are supposed to be back to Red Cap levels we hear. Zinc in the 1100 ppm or so..??

Hydro,
Can you confirm the zinc level in silver cap? To me, this spec is most important. Silver cap is 100% PAO? How is this % be determined with the new smoke and mirrors labeling?

I'd be interested in that too. I am currently running Vtwin in 600 SCi motors. I have a place that sells it to me for 7.80 per quart if I buy enough at a time. But if I can get the same protection from the new 15w50 silver cap why pay the extra $.

Tried this on another thread.

Anybody here of Silogram??

Go to bottom of page and click on DynaRace II . There is no weight rating. They won't give you one either.

http://www.silogramusa.com/Motor%20Oils/MotorOils.htm

V-Twin is PAO GRP IV/V. Continue to use it as you have a great price. It has the edge on Silver Cap to be sure.

Silver Cap we suspect is not 100% PAO BUT it is a real good product for the money. My guess GRP IV and some GRP III..only a guess..

'nuff said till we get the actual ZDDP numbers...but Mobil says they are near Red Cap #s for antiwear additives. If so it will surely be a wonderful additon to our armentarium at a $6.00 and change price..

The VI and filmstrength is much improved from what I did see vs. EP which was not all that great from day #1.

Who do they buy their base from as they are a formulation company like Amsoil.

How does Valvoline Racing VR-1 20W-50 conventional oil stack up? Touts hight levels of ZDDP right on the bottle and I found it for $2.89/quart at a local autoparts store. Or is Kendall 20W-50 still the way to go if you go with a conventional oil? I can buy Kendall at $1.99/quart.

Mobil 1 V-Twin 20w-50 is $7.99/Qt at Auto Zone.

Both are very good and near as good and maybe infact better than the old 15W-50 M-1 EP for certain.

Not as good as the new M-1 Silver Cap 15W-50 which is very close to the old Red Cap formulation we are hearing.


Premium PAO's such as Redline/Amsoil Racing and V-twin are still the 2,000 gorilla's.

Best price I have seen!

Buy enough for the season for that price!

Anyone ever try or know anything about Spectro Oils. They have a Heavy Duty Golden Motorcycle 20W-50 that's supposedly great.

http://www.spectro-oils.com/products.htm

Has anybody used GTX 20/50 in 650 plus HP

Don't know who they buy from. I called them to ask the weight of the race oil. I was told that it's a secret. I know a someone thats been using it for three years and had good success.Good oil temps and pressure. It looks like trany fluid. $85 for a five gal. can.

Hydro, I was thinking of you this evening. They had an hour on the History Channel about lubrication, and oil in general. Very interesting.

A secret! Just buy a quart and send it out for an analysis. The lab will do a viscosity check at 100 and 210 and then it's not a secret anymore. A secret, what are they trying to hide?
Ken

Henry Ford used a lard in the model "A's".

Same stuff the Apache's use..:drink: