chaadster

Ha! Well that sets things straight, thanks JWise. So here it is:

1. Delvac in USA = conventional (dino) oil
2. Delvac 1 in ROW = full synthetic
3. Delvac 1 (ROW, and the 5w40 recommended by Hillary) = Mobil 1 (USA) 5w40 Turbo Diesel Truck full syn

Now we're gettin' somewhere! I guess the only outstanding question is which Mobil 1 Kibort hates!

hacker-pschorr

Here you go:

http://www.mobil.com/USA-English/Lub...Collection.asp

Synthetic is listed at the bottom

More info:
http://www.mobil.com/USA-English/Lub...Collection.asp

FlyingDog

Not quite.
Delvac 1300 Super = conventional oil
Delvac 1 = synthetic
Both available in the US.
Delvac 1 5w40 is also branded M1 T&SUV in the US.

Ernest, Rotella T 15w40 in the white bottles is conventional. Rotella T 5w40 in the blue bottles is a hydrocracked synthetic. Rotella and Chevron Delo should say somewhere on the bottle what Group they are even if they don't say specifically synthetic, hydrocracked synthetic, or conventional.

hacker-pschorr

One more correction

Per this:
http://www.mobil.com/USA-English/Lub...Collection.asp

the M1 T&SUV is no longer available

FlyingDog

Of course Mobil 1 Turbo Diesel Truck 5W-40 is not on their site. My local Advance Auto says they can order M1 T&SUV 5w40, and they have it on the shelves. M1 T&SUV 5w30 is what I use in my Jeep.

They should just stop the rebranding BS and sell Delvac 1 in regular stores.

hacker-pschorr

Is the Truck & SUV stuff synthetic? It's must be different than the Delvac / Turbo Diesel Truck stuff. Is it just a re-labelled Mobile 1?

FlyingDog

According to Ernest's quote of the Mobil site on page 1, M1 Turbo Diesel Truck is Delvac 1. According to Doug H, M1 T&SUV is Delvac 1. Your quote says that M1 T&SUV's replacement is M1 Turbo Diesel Truck. It sounds like they're all the same thing.

All Mobil 1 and Delvac 1 products are synthetic.

Of course the 5w30 is different than the 5w40. From what I can determine, M1 T&SUV 5w30 is M1 Extended Life without the 15k guarantee and $4-5 less per jug. It also has diesel ratings that I'm not sure Extended Life has.

AO

What the hell is Hydrocracked syn? Never heard of this. I've got 3 gallons of Rotella T 5w-40 ready to go in this week.

FlyingDog

Hydrocracked synthetic oil is synthetic made from conventional oil. "True" synthetic oil is ester based made from castor bean oil. I've read articles that debate which is better and both seem to have advantages, not that I really understand much of the articles other than the intoductions and summaries. If you want a more technical explanation, you'll have to ask Doug Hillary.

3 gallons? trying to hydrolock your engine from below? I used that until I pulled my engine. Doug has recommended it before and I've read other positive reviews of it.

mark kibort

I think if you compared redline or Amzoil at 220f temp and saw the oil pressures change, you would switch. the thermal break down of mobil 1 seems to be pretty bad from what ive been seeing at the track. for no track use, its probalby fine, as most oils will be. we did the test with scot. even right after the race at 260F oil temps, the pressure was 5 bar at 2krpm. before, even at 220f, the mobil 1 and valvoline were 4 bar at 2k and it took 3krpm to get 5 bar. pretty significant differences.
dont know why anyone would take a chance in using any other type of oil than the premium redline or amzoil for spirited or racing driving conditions.

MK

Doug Hillary

Hello,
the Delvac range of products is especially formulated for Commercial use and has been available Worldwide for many decades. There are a number of diesel only engine oils from most "serious" Oil Companies that are unsuitable for use in a petrol engine the same as with Delvac products.
This is primarily due to the Sulphated Ash levels involved and the resulting risk of excessive wear in the ring/ring land/cylinder areas in petrol engines. Some MAY pollute CATS too
Suitable Heavy Duty Engine Oils (HDEOs) for use in petrol engines will usually be endorsed with "mixed fleet" on the label and will include the API's "S" rating as well

Delvac 1 5w-40 HDEO is a Group 4/5 (fully synthetic) mixed fleet product

Some historical performance information from my high speed diesel engines on the use of Delvac 1 5w-40 in its intended application - Interstate Road Transport follows

Background Data
12.7 ltr Detroit Series 60 DDEC 3/4 engines with 500hp @ 1900rpm (flight revs 2100) and 1650lb/ft torque @ 1200 to 1500rpm. Jacobs engine brakes were fitted
Loaded weight for 98% of the "engine on" time was 42.5t (93500 lbs)
Operating ambient range = -15C to 44C
Daily operating ambient spread (typical) = 0C to 37C
Period of controlled use = eight (8) years and around 8 million kms (5 million miles)

All of my engines used Donaldson ELF (synthetic media) FF oil filters and were fitted with supplementary MANN-Hummel "Spinner 2" centrifuge by-pass filtration units. The ELF synthetic media filters and the 5w oil greatly speeds up oil circulation/filtration from cold!

For two million kms the engines were run without any full flow filter "elements" but with 25micron Stainless Steel inserts instead. The centrifuges had made the FF filters redundant and the SS inserts further improved OIL FLOW without affecting OIL PRESSURE
Adding a bypass oil filter of any type/make always has an effect on oil flow rates within the lubrication system

Performance Data (all engines);
Average oil change interval = 90000kms (56000miles)
Longest oil change interval = 130000kms (81000miles)
Average oil temperature = 103C (230f)
Highest oil temperature = 112C (245f)
Normal hot OP = 2.93bar (specification is 2.75bar)
Average coolant temperature = 93C (197f)
Average oil viscosity at OC point = 88cSt (3% thicker than new oil)
New oil viscosity = 85cSt
Detroit's allowed used oil viscosity range = 72-119cSt (-15% to +40% of new)
Average TBN (corrosion protection) @ OCI = 2.89 (new 11 - allowed 1 (to D4739)
Average oil consumption = 1 litre per 6000kms

The use of Delvac 1 5w-40 in my MY928 S4 is covered in 11 UOAs on this site

The attached pictures are from a group of 10. This engine had done 1.1m kms ( 683k miles) over 4.5 years when it was disassembled by Detroit Diesel in Brisbane, Australia, for inspection at my request. ALL WEARING PARTS including ALL VALVE TRAIN components were found to be in a "suitable for reinstallation" condition. This engine has now done an additional 1million trouble free kilometres

I feel that it is very sad that Mark Kibort has to continuously "rubbish" a product that is a factory fill by at least two of the best engine Makers ever. Mark you have done this for some several years now it is not very professional. Mobil 1 continues to be poured into thousands of new engines daily and I do not know of any downside to this via Warranty claims and the like!

Mark be happy with what YOU use! Always remember though that ExxonMobil is the Worlds only supplier of high Viscosity Index, high and low Viscosty PAOs - Amsoil uses these!!!!

I do NOT work for any Oil Company and use a mix of fully synthetic lubricants from Shell, Castrol, Mobil and Delvac 1 in a cross section of my engines, gearboxes and differentials and in all power steering systems. I do know that there are no "magic" oils that will make an engine last significantly longer than another when all relevant specifications are the same - oil, use, climate and etc!

I hope this is of interest
Regards

ew928

Thanks, Matt.
I did remember seeing the blue jugs Rotella somewhere.
Guess I need to pay more attention next time and search for 5W-40 Delvac 1.
It's good enough for Doug Hillary, it's good enough for my motor.

Anyone remember which Mobil 1 formulation and grade oil Mark Kibort is harshing on?

chaadster

Jesus....C'mon Mark. Which Mobil 1? Which Valvoline? Does this not make a difference? Listen, if you're taking money or kickbacks from Amzoil, just say so instead of indiscriminately poo-pooing every other oil on the market. We'll still love you, man! I mean, a racer has got to race, if you know what I'm sayin'.

chaadster

See my posts above...He has never said, despite my repeated questioning...I'm thinkin' he's just a hater at this point.

ew928

Anyone remember the Folger's coffee commercials from quite a few years back?

"Today we have secretly replaced this race driver's motor oil with Mobil 1. . ."

Stickers make race cars go fast. Sponsorship is a good thing.