New Mobil mix for 1.8T.

[brianpavlovic]

In my quest for the perfect xW-40 mix, I tried mixing Mobil 1 SuperSyn 0w30 and Mobil 1 5W-40 T-SUV oil. I like the idea of having an oil that starts out a 0W to lubricate well at start up. I also like an oil that will not shear out of grade when it gets up to operating temp and protect / clean. I noticed that with the oils that I have been using, the car would seem to run hotter and that fan would always run after I shut it down and that was with me waiting a little bit after driving to let the turbo cool down. The Mobil 1 Ow-30 SS has the right amount of detergents and engine protection ingredients, but is on the thin side. I also like Mobil 1 5W-40 T-SUV ingredients, but is on the thick side. So I did a mixture of 3 parts 0w30 to 2 parts 5W-40. The oil's VOA should look like this:

Moly 78
Ca 2809
Ph 1099
Zn 1138
Sus 62
Tbn 13.0
I have been hearing good things about Mobil's 0W-30, but it seems it was on the thin side even though it kept its weight. Try this mixture and you will see how your engine will run.....


I mixed 3 quarts of 5W-40 Mobil T-SUV with 2 quarts of 0w30 Mobil 1 SuperSyn.

 

[wavinwayne]

Additive clash will cause your engine to seize up within 1000 miles. Bad, bad brianpavlovic

 

[brianpavlovic]

I called Mobil and the tech said that it was okay to mix both of these oils together since they have similar chemistry. Why would my engine seize Wayne?

 

[wavinwayne]

It's a joke.

 

[brianpavlovic]

sorry wayne, recently since I have found this website, I have found myself spending too much time on here doing research to such a degree that I spend about 3-4 hours a week on here just doing research. Its crazy!!!!!!!!! Anyhoo, I like the looks that I get from people when I ask them questions about oil and they twist their head and go "....what?!?!?!?!?!"

-Brian

 

[brianpavlovic]

You know its funny you say that! I looked at the new Mobil 1 0W-40 and it seems like ti shears pretty badly and then thickens up. I like an oil to stay in grade and both oils that I mixed stay in grade. I expect that the mixture should post good results. I know that I used to use Amsoil 5W-40, but I hate doing business over the net. I would rather drive to my local Napa place and just buy it and change it! Amsoil is probably the best oil out there just by looking at their numbers of both VOA and UOA. I wanted an oil like that, but alittle cheaper and more convienent to buy. Now that the oil has been in my car for awhile, I have noticed that what I expected was correct. The car feels real peppy like a 0W but it also is protected like a "true" 40 and it will not shear out of grade. To me, this mixture might just be the best oil mix for our 1.8T's. I have also noticed that after driving city or highway for awhile, the car doesn't get as hot as before with the amsoil. The amsoil's cst at 100c was like 15 where this oil is probably 12.5-13 which is thick enough to protect, but not get too hot. You know how our fans kick on sometimes when you drive for awhile in the heat? Mine stopped doing that ever since this mixture went in. Today and yesterday that temp here in PA is close to 100 F and the car keeps it cool! You should really try this mix and you will notice how quiet the car is and how it performs. But, I am just a novice at this.

Brian

 

[Triple_Se7en]

I mix/blend all the time but I never mix the 0w's because of the modifiers in them. They are a new breed of oils with ingredients that cause them to thicken & thin upon temperature changes to a greater extend than the oils of our past. This is a new generation of oils that go beyond standard oils of the past. When you mix modified oils with non-modified, you reduce their thickening/thinning abilities & change their entire ways of doing their business inside your engine.

For mixing, stay with the normal oils - normal multi-grade viscosities like 5W-20/30/40 - 10w30/40 - 15W40/50 - 20Ws/50. I also never mix two different manufacturers synthetic oils together. I stick with dino-to-dino blends or dino-to-synthetics.

I always stay with the same oil manufacturer too. I do not mix Mobil with Shell or Havoline with Castrol (examples). If an oil company produces several brands, I'll mix in-house.... ie.... Conoco, Trop Artic, Motorcraft & Kendall.

Just my opinion. I'm no oil scientist here. I'm just real careful how I mix & with what I mix.

 

[williar]

You might give GC a try, a robust stay-in-grade 0w30. Available at your friendly AutoZone store.

 

[Eiron]

Hi Brian,

I haven't been following your oil trials. You mention that you used to use Amsoil 5W-40 but didn't care for the higher engine temps. Now you're mixing Mobil 1 0w30 & 5W-40. My question is, have you already tried 5 qts of Mobil 1 5W-40?

I switched from Mobil 1 0W-40 to Mobil 1 5W-40 in our 2.0L Saab turbo & had fantastic improvements at the 1/2-way UOA back in Feb.

 

[blmqzjc]

quote:

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Originally posted by Mud:
I only wish I could get 5 qts into the 1.8T in our A4.

Your mixture is interesting - wonder if it's better than a straight dose of Mobil 1 0W-40? Look forward to your posting a used oil analysis on it after some miles.

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If you use one of those big honker filters (like a NAPA 1333 or equiv), you may get close to 5 qts. Should be over 4 1/2 regarless. I haven't tried one yet, but will next oil change on my Passat AUG 1.8T.

 

[TooSlick]

If you mix basketballs and marbles, you don't get baseballs...

At high temps, the more volatile, very low molecular weight, 0w30 basestock will still burn off easily. At low temps, the higher molecular weight basestock of Delvac 1 will still thicken the mixture.

What you have here is a physical mixture and not a chemical one, so the original properties of each constitutent material are still present.

 

[wavinwayne]

quote:

---

Originally posted by Mud:
I only wish I could get 5 qts into the 1.8T in our A4.

---

Sorry to hijack this thread, but FWIW:
I was using an OEM size Mobil 1 M1-205 filter on my '00 VW GTI 1.8T. With that filter, the engine's total oil capacity with filter change was 4.5-4.7 qt's.

I decided to run a bigger filter, the M1-301. With this filter, the oil capacity with filter change is exactly 5 qt's.

I recommend that you give the M1-301 a try.

 

[Quattro Pete]

quote:

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Originally posted by TooSlick:
If you mix basketballs and marbles, you don't get baseballs...

---

 

[Mud]

I only wish I could get 5 qts into the 1.8T in our A4.

Your mixture is interesting - wonder if it's better than a straight dose of Mobil 1 0W-40? Look forward to your posting a used oil analysis on it after some miles.

 

[TooSlick]

If I might make a suggestion...

I've been favorably impressed with the new, Mobil 1, "Extended Performance" formulations. I'd recommend using their 10w30, year round in this engine. Both these oils are marginally too thin (3.2 Cp @ 150C) to meet the VW 502.00 specification, but I have no doubt they would easily meet this requirement in terms of wear, engine deposits, oil consumption, stay in grade performance, etc. Of course, neither of the two Mobil 1 formulations you're using meets VW 502.00 or ACEA A3 either, so I see no harm in switching.

I think you'll find the 10w30/EP provides the cooler engine temps you're looking for, along with better cold weather performance than the Delvac 1.

I've tried both the xw-30 and xw-40, Amsoil formulations in my 225 hp, Audi TT and I prefer the S2000, 0w30 or 10w30/ATM in order to get the best performance and the coolest engine temps. I've seen absolutely NO difference in wear rates or oil consumption with these different grades. The 9500 mile test of the 10w30 was posted some time back in the used oil analysis section. It ended up @ 11.35 Cst, so it really didn't shear at all....

Tooslick
dixie synthetics

 

[brianpavlovic]

I know that the owners manual suggests that the oil meet 502.00 approval or at least have an SL rating, which both of the oils have. My sony television's manual suggests that I use sony batteries only as well. Lets see when I post the results of my used oil analysis here, okay? I agree with you that amsoil is a great oil, but why on earth would I need 10w30 oil? From the numbers I crunched, just using Amsoil oil only, I would get better protection using a 5W-40 both better protection at start up which is when most harm is done as well as up to the 40 end. Amsoil's 5w-40 looks like one of the best oils and best grades. Doesn't your manual "suggest" a 0w30 and didn't it come from the factory with a 0w30 oil? If so, then why are you running such a thick oil? Is something wrong with the engine or something?

 

[TooSlick]

Brian,

My engine is the same as yours, but it has the hotter chip and two, air to air intercoolers to further densify the incoming charge and provide more oxygen in the combustion chambers.

These VW/Audi engines aren't all that sensitive to viscosity and you can run anything from a 0w30 to a 15w40 synthetic year round in most of North America. Since I'm an Amsoil dealer and propulsion/materials engineer, I use my personal vehicles as "testbeds" and run a variety of oils in them. Then I file the results away in my head for my own use in making future recommendations.

This engine will FAR outlast the rest of the vehicle, regardless of which Amsoil formulation you run. So it only makes sense to use the stuff that provides the best performance,fuel efficiency and engine cooling. I've actually been getting lower wear rates with this engine than I did with the old 1.8L, 85 Hp, VW engine in my 1985 Jetta GL! The motor is just about bulletproof, with a forged crankshaft and excellent metallurgy throughout.

I really like Delvac 1 A LOT and it would be my second choice to run year round after the new 10w30/EP. I'd avoid the Mobil 1, 0w30 and 0w-40, which are probably their worse performers overall.

regards,

Ted

 

[brianpavlovic]

Well, here's the thing, I am not knock'in Amsoil or their numbers. I used to run Amsoil's 5W-40 European Formula. The car ran awesome and the wear rates were almost zero. If there was a way that I could drive to an Amsoil Store and pick some up, then that would be a different story. However, I don't feel good about giving out my credit card number and waiting for it to come in the mail plus the cost of the oil and shipping is alittle pricy. I am actually thinking about trying Amsoil's s3000 0w30 once September rolls around. Your product is quite possibly the best oil on the market for our 1.8T's. However, convience is also a huge thing. Listen, I work at Autozone and if we carried the oil to sell to our customers, then I would run it in both of our vehicles, but the average guy cannot just go toa store and purchase it. It has to be ordered and that sucks. Anyhoo, let me know how you like the 0w30 because the numbers are pretty good, but not as good as the 5W-40.

 

[wavinwayne]

brianpavlovic,

How hard have you really looked for Amsoil in Allentown, PA? If it's anything like it is around here in North AL, I had never "seen" Amsoil, until I started really looking for it. To date, I have found 4 shops within 20 minutes of me that sell Amsoil.

Check with several of the independent repair shops in your area. I bet somebody in Allentown sells Amsoil.

Ted,

How do you explain the excellent results I had with Mobil 1 0w40 in my VW 1.8T? My engine showed virtually no wear in 5100 miles on Mobil 1 0w40.

 

[haley10]

quote:

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Ted,

How do you explain the excellent results I had with Mobil 1 0w40 in my VW 1.8T? My engine showed virtually no wear in 5100 miles on Mobil 1 0w40. [/QB]

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TS considers 10K a normal oci.

5100 miles don't count.