Mike J

Of course, now that I have the Turbo, I am being a bit more sensitive to what oil she gets. I need to do an oil change in a month or so when she comes off the road, so I am doing my research.

The current recommendation on the 993 Turbo forum is using Mobil V-Twin 20w50 on the Turbos. Here is the some of the text about the oil off http://www.mobiloil.com/usa-english/..._Oil_FAQs.aspx:


Mobil 1 V-Twin 20W-50 fully synthetic motor oil is designed for air-cooled, large-displacement bikes. Because of their design, these engines can generate very high localized oil temperatures and high overall bulk-oil temperatures.

As you know, a typical air-cooled V-twin's rear cylinder gets a lot hotter than the front cylinder – it's a matter of airflow. When it's hot out and you're stuck in traffic, the oil temperature in your bike climbs rapidly. Above about 250°F, conventional motor oil is going to break down. Mobil 1 V-Twin 20W-50 fully synthetic motor oil is good to above 300°F.

Like Mobil 1 Racing 4T 10W-40, Mobil 1 V-Twin has high levels of phosphorus/zinc and the same high-temperature detergent technology for superior wear protection and engine cleanliness, even at elevated oil temperatures.

With Mobil 1 V-Twin oil, you can go the full length of the manufacturer's recommended oil change intervals with ease.

It makes sense since our cars essentially have giant motorcycle engines. I like the characteristic that it can take high spike temperatures, especially with the turbos. Lots of zinc as well... anyone used this oil on the list?

And yes, I know with oils, 10 brands, 100 opinions.

Cheers,

Mike

trophy

Is the V-Twin oil recommended for 'Wet Clutches"? If it is I would be hesitant in using this in a car engine. Any oil that is designed for use in a wet clutch doesn't have the friction modifiers that automotive oil requires (Because it causes the clutch to not work)

I am unsure with the Mobil line of oils. I have used Motul 300v (Motorsport Oil) for many years, I have also found that Motul produces whats called 300v Factory Line 4T, this is their motorcycle oil and is a little cheaper but doesn't have all the good stuff automotive engines need.

ltc

Mike,
FWIW, I would suggest sending a PM to RL member 'Kevin' who is a regular expert contributor in the 996 Turbo forum.
He has quite a bit of experience with oil and turbo P car motors based on his line of work.

Texas993

As you state, the turbo guys like the Vtwin. I have it in my car.

I saw it for sale at wal-mart recently for $8.50/qt.

Mike J

The recommendation is from Kevin...he also is on the 993 Turbo forum given he services Turbochargers....

Slow Guy

You don't need these hassles Mike. I'll swap you my AR coupe for her so you won't have to worry about it any more.


I need to show up Mike at Palooza anyway.....

Quadcammer

I use it, so does NoHTWO O, and as far as I can tell, neither of us has had issue.

he has UOAs if you'd like to pm him.

mike993c2s

Just switched over to Mobil V-Twin with my last oil change.

BLT4SPD

I ran V-Twin in my C2 for ~20k miles with no issues and I now run it in my TT. There is _some_ concern about the high levels of Zn and Ph and the long term effects on the Cats and the O2 sensors, but I never had anything go wrong in the C2.

Mobil also make a 10-40 in the V-Twin/Racing line and I blend it to get close to a 15-45ish.

Mike J

The problem is you cannot really tell unless you tear the engine down - I think just about any oil will still have our engines running fine after 20K miles - its the 50K miles, or 100K miles that it makes a difference, and the condition of the bearings etc. when its eventually torn down.

Hmm, not an obvious choice - other brands such as Motul, Brad-Penn, etc. are also very good.

Cheers,

Mike

Mark in Baltimore

I thought the V Twin oil was lacking a sufficient amount of detergents or something. I tried it briefly but ended up selling the case that I had on Craigslist.

77'3.6vram

I have both a 96 c2 and a 96' modified turbo.I use the cars all year long.I live in southern CT.For the last five years I have been using Amsoil 5/40.I need the cold weather protection that a 20/50 does not have.I do use Mobel V twin 20/50 and 10/40 in my 98' Moto Guzzi Centauro and 99' Bassa.I do not ride my bikes in the winter.Amsoil is by far the best oil on the market today for all air cooled cars.IMO

Stealth 993

I was in your camp, till my shop stopped selling it. I then switched to Motul, & the car ran better with it. I was shocked, & others who have switched have noticed the same. I have 8kmi on my C4 this year, & have not added a drop. About 4k on my C4S & also have not added a drop, but to be fair I didn't with Amsoil either.

I'm telling you switch for 1 oil change to Motul, the car will feel quicker, be smoother, & respond better.

Now on to M1. It's not a true synthetic. It's base crude that has been cracked. In my eyes is a lesser oil then any that is made with PAO or Easter base stocks. On a turbo car you want a full synthetic that will not coke the oil lines, & in the turbo. If you cars oil is 210deg, in the turbo it's WAY higher, then it comes out cools off really fast, & leaves deposits.

Quadcammer

Firstly, this is not standard automotive Mobil 1. Secondly, I'm going to take Kevin @ UMWs advice on oil way before a guy who thinks that Motul will make the car feel quicker, smoother, and respond better

77'3.6vram

What does Kevin suggest for a turbo that is used all year long?