Mobile 1 V twin 20/50 oil or not

[heliolps2]

I read the the thread on oil for air cooled engines, it took me awhile. What I came away with , was that I should use Brad Penn 20/50

So here's my dilemma, I have used Mobile 1 15/50 in this motor since the build of this motor in 1999 about 60,000 miles ago, and last summer I switched to Brad Penn 20/50 because of the zddp, and then in the fall I had a leak down done and , good news all cyl's where between 2 and 3% leak down , great and my Hydrocarbons where under 99, with no cat,

So I'm thinking the oil that I used might of helped over the years, I'm thinking of switching back to Mobile 1 , either M 1 15/50 or M 1 V twin

What's your opinion on the Mobile 1 V Twin 20/50 ?

Helio

[Bill Verburg]

Originally Posted by heliolps2

I read the the thread on oil for air cooled engines, it took me awhile. What I came away with , was that I should use Brad Penn 20/50

So here's my dilemma, I have used Mobile 1 15/50 in this motor since the build of this motor in 1999 about 60,000 miles ago, and last summer I switched to Brad Penn 20/50 because of the zddp, and then in the fall I had a leak down done and , good news all cyl's where between 2 and 3% leak down , great and my Hydrocarbons where under 99, with no cat,

So I'm thinking the oil that I used might of helped over the years, I'm thinking of switching back to Mobile 1 , either M 1 15/50 or M 1 V twin

What's your opinion on the Mobile 1 V Twin 20/50 ?

Helio

M1 15w-50 is a fine oil for our cars, vtwin is also fine and has more zddp but it's not necessary, BP 20w-50 is also fine and also has more zddp but again not necessary.

[Dave Colangelo]

I have though about this time and time again, I recently spoke with a local Porsche mechanic and he suggested I use shell oil, I forget which type but I will call him up and ask again, he swears by the stuff in both of his 911's. The brad penn issue comes up over and over and as it is a good oil the mechanic made a good point about it. Its not super easy to get a hold of. Although it may not be an issue to get the 10 quarts you need to do a change, what if you are on the road and need to top of the tank. There are not many places that carry it. You could just bring 4 quarts along in the frunk like many of us do any way. That all being said I have heard many great things about the brad penn stuff, the only thing keeping me from it, is cost and how hard it is to get.

Regards
Dave

[RSTarga]

I've used Mobil 1 15-50 for 37 years basically since it was introduced as Mobil SHC or something like that. In all those years I have never experienced any oil related problems in any engine, turbo or normally aspirated.
If you read the Mobil technical details it too has more than enough ZDDP for our engines + the exceptional lubrication of a synthetic.
For all the excellent reviews from Brad Penn etc. I am still not tempted to change.

[WERK I]

I've been using a 50/50 combination of Mobil 1 V-Twin and Mobil 1 for two years and like the results. The primary reason to choose V-Twin was to insure adequate ZDDP to protect the valve train and to choose synthetic for additional prevention of coking in the turbo's journals. To choose a 50/50 blend was primarily a financial decision and this ratio would boost ZDDP to a level I thought more than adequate. I change oil once a year though 5 months the car is in storage.
The additional benefit has been a noticeably quieter valve train, though I have read similar reports from users using Brad Penn as well. I hope to take pics of the cam lobes during the winter hibernation these coming months when I adjust the valve clearances, if any is needed.

[DanielDudley]

There are two versions of M1 15/50. High Performance and Extended Performance. You want High Performance. From what I understand, if you are using an oil with lower ZDDP content, you want to keep the change interval short, as ZDDP is used up in the operation of the engine.

So M1 HP and a 3000 mile interval.

[Quadcammer]

i run the vtwin and its been fine

[lonewolf]

used quaker state 20/50 for over 30 years now in all engines.
never a problem.
The old tow vehicle with a chevy 350,and over 250000 miles has never been touched,same oil pressure as the day I bought it.
just my 2c

[PatrickB]

Originally Posted by heliolps2

I read the the thread on oil for air cooled engines, it took me awhile. What I came away with , was that I should use Brad Penn 20/50

So here's my dilemma, I have used Mobile 1 15/50 in this motor since the build of this motor in 1999 about 60,000 miles ago, and last summer I switched to Brad Penn 20/50 because of the zddp, and then in the fall I had a leak down done and , good news all cyl's where between 2 and 3% leak down , great and my Hydrocarbons where under 99, with no cat,

So I'm thinking the oil that I used might of helped over the years, I'm thinking of switching back to Mobile 1 , either M 1 15/50 or M 1 V twin

What's your opinion on the Mobile 1 V Twin 20/50 ?

Helio

Seriously? You read the entire thread, and you need MORE opinions?

I ran the V-Twin for a year and a half, and then switched to RedLine Motorcycle 20-60W, as I had a nearby dealer, and was much easier to get than the hard to find M1 Product. I did a complete rebuild of my motor after an over rev at the track with 173k miles on the clock (3.2) Guess what... Severe pitting and corrosion an most of the internal components! The first 23 years, ran M1 15-50. Then switched to M1 V-Twin, then Redline for the next 2 years. After the rebuild, I only run Brad Penn! It has the necessary levels of Z&P that these engines need.

[HFR_Racer]

Using Mobil 1 TDT per Mobil 1 chemist on the Bob's the Oil Guy website. Supposed to be better base stock than conventional Mobil 1. He's running it in his Porsche as well. I've been running it for three seasons. 3 oil changes and no cam wear. I've had the engine out twice so I know.

[PatrickB]

Lab results still show higher rates of Z & P in the M1 Vtwin, as well as BP semi-syn 20-50.. The TDT shows higher numbers than the base stock of M1 Synthetic, so yes, you still are better off running TDT...

[rolls 912]

I use the vtwin on my 356 and have been very happy with it.

[heliolps2]

Thanks guys , but whats Mobile 1 TDT oil ?

[heliolps2]

bumb

[chuckr]

I ran the Mobil One V-Twin oil for years in my 88. The reason I used it was after reading about it
in an offshoreonly forum. My car sits in the garage most of the time, weekends only usage.
Offshore racing boats sit a lot also. The V-Twin goes well with that. When Brad Penn came out
it offered the same benefits at half the price....I now use Brad Penn

[Quicksilver]

One detail on a number of the recommendations:
A recommendation that is based on a proclamation of, "I have used [brand x] oil for [XX] years" is completely useless and ignores the reason that these threads have become needed.

All of those [brand x] oils have been reformulated so what they were 10 years ago has nothing to do with what they are now. We need oil choices based on today's formulations.
Recommendations based on oil analysis and recommendations by people who build, monitor and maintain a bunch of 911s are worth WAY more then recommendations based on a single user's lack of an engine failure on one car.

[rfuerst911sc]

Originally Posted by heliolps2

Thanks guys , but whats Mobile 1 TDT oil ?

Turbo Diesel Truck oil it is 5w40 .

[Uwon]

I have used Valvoline 20/50 Racing exclusively for over 200,000 miles since my initial turbo build (3.4 twin plug, Electromotive Tec3r, etc.). This includes about 10 DE days/ year and extensive long distance touring across Canada and U.S. over the last 10 years. I change oil every 5k and send it out to Blackstone Labs. As a result of a major crash on track, I decided to do a complete rebuild to check out crank etc. Bearings etc. all showed minimal wear except that top end needed refurbishing, and, Ruf pistons and cylinders needed TLC by LN Engineering. And BTW, I'm on my original turbo, untouched!! Hope this helps. Cheers....