Mobil 1 Product Guide- Flatt tappet

[buster]

Using Synthetic Oil with Non Roller Bearing Type Tappets
I've been advised to not use any synthetic oil for my rebuilt '64 T-Bird's 390 engine because the tappets are not roller-bearing types. It doesn't seem right with all your higher specs. Can I?
-- Bill Hilliard, Golden, CO

Answer:
There have been recently some concerns voiced by bloggers that the new GF-4 oils which have a reduced ZDDP level to protect catalytic converters have caused problems in high performance race engines with sliding tappets. We cannot confirm these issues and have been told by the OEMs that 800 ppm (GF-4 level) will protect both older and newer engines. If you prefer a product with a higher level of anti-wear performance, there are a number of Mobil 1 products that have higher levels of phosphorus. In case you prefer oils with a higher phosphorus level please refer to the attached list for products that have higher phosphorus.

Mobil 1 Product List

 

[JAG]

That's a helpful compilation. Thanks!

 

[glenncof]

Nice. What does "Boosted" mean ?

 

[Best F100]

I thought Mobil 1 10W30 High Mileage met ACEA A3 (with a 3.66 HT/HS)? Not according to this product list. What gives? The old slight of hand trick, eh?

 

[SilverGGA]

It also lists Mobil 1 5w30 as ACEA A5 approved.

 

[cfromc]

Its funny that two of their 10w30s are not recommended for any customer applications. If they can't be recommended, why are they being made? Also, the product description of the 10w30 HM does state ACEA A3 and I believe the bottle does too, but I will have to check when I get home.

 

[ATS-V]

Quote:

---

Nice. What does "Boosted" mean ?

---

Forced induction, super or turbo charged.

 

[flatlandtacoma]

Maybe that list will finally silence all the ignorant posters that claim SL is superior since API SM contains less (or no) zddp?

M1 0w40 SM 1000 ppm
M1 5w50 SM 1000 ppm
M1 15w50 SM 1200 ppm

Only ILSAC GF-4 limits ZDDP. API SM does not limit ZDDP.

 

[Mudcat]

Quote:

---

Its funny that two of their 10w30s are not recommended for any customer applications. If they can't be recommended, why are they being made?

---

They're recommended for API SL spec'd service and earlier superceded specs. That covers millions of vehicles still on the road. That is why they are still made.

 

[Merkava_4]

Alright, so how do you convert that yellow column over to parts per million?

 

[JAG]

0.1% is 1000 PPM
0.08% is 800 PPM, etc.

 

[Merkava_4]

Thanks JAG!

 

[BennyL]

so Mobil1 0W-40 is SM rated and has nice amount of ZDDP? also carries a variety of MB, VW and BMW specs. even viper approved.

nice oil!

 

[David_Navone]

Two weeks ago we tested Mobile 1 and there was NO P in the mix.. This means that there was NO ZDDP.. Yes, there was Zinc, but Zn alone does not make up the ZDDP molecule. And it's the ZDDP molecule that creates the thin film "sacrifical" layer that prevents metal-metal interaction. The prevention action requires high temp and pressures, and the ZDDP molecule has been protecting older type engines in performace situation for 50+ years.. Until the API removed ZDDP from virtually all off-the-shelf motor oils sold today. Not a problem for contemporary vehicles, but if you drive a pre-OBDII car, I'd check the factory oil specs before you pour in the new SM rated oils.

 

[JAG]

I'm sorry to say that you've been misinformed about ZDDP in Mobil 1 and virtually all off the shelf motor oils and what API has done.

 

[LargeCarManX2]

buster is opening up another can of worms

I am surprized Mobil can't confirm that cams are being wiped out by the thousands with the reduced levels of ZDDP.

Other major oil manfactures have picked up on the flat tappet percentage of the market and have made some strides at off the road marketed high level ZDDP oils.

Most of the camshaft failures are with extreme lift and duration camshafts. Also, there has been some discussion that the cam manfacture is at fault with using substandard metal stock....only time will tell

 

[jsharp]

Quote:

---

Maybe that list will finally silence all the ignorant posters that claim SL is superior since API SM contains less (or no) zddp?

M1 0w40 SM 1000 ppm
M1 5w50 SM 1000 ppm
M1 15w50 SM 1200 ppm

Only ILSAC GF-4 limits ZDDP. API SM does not limit ZDDP.

---

We're 1/2 way there. Maybe... Now if we could just get rid of all of the "SL oil will destroy your catalyst!" panic that's taken hold, we'd be all set...

 

[oilyriser]

Quote:

---

Two weeks ago we tested Mobile 1 and there was NO P in the mix..

---

Please tell us more about this. There are formulations with no P. Has Mobil released a new formula? or is it just Mobile?

 

[Pablo]

No offense but it's hard to take any post with "Mobile" for Mobil seriously.

API did not "remove" ZDDP. Maybe your equipment has issues. Last I checked there were upper and lower spec limits as well.......

 

[buster]

Until Porsche, Mercedes, and other OEM's have engine issues with SM oils, it's not a problem. Engines are not failing.

The large % of older engines that need more ZDDP use M1 15w-50 or 0w-40.