vbaron

On the Brad Penn site, I saw this warning:

Penn Grade 1 High Performance Oils contain high zinc and phosphorous additive concentrations which can be detrimental to cars and trucks with catalytic converters.

Would the higher levels be a concern for our catalytic converters? If so, would anyone know at what levels?

Vin

Stephen70

Mobil 1 Peak Life 5W-50

Reasonably priced, works well in our local cool climate - as well as on German Autobahn in hot day.

LouZ

This is a two edged sword, first and foremost, our engine's valvetrain needs the high levels of ZDDP for protection. Second, the feds mandated that new cars allow for 10 years warranty protection on the cats. ZDDP will s_l_o_w_l_y poison the cat, so the oil companies were forced to back off on the ppm content.

We have 20+ year old cats, of which, around the first 15 years, most oil had the same level of ZDDP as Brad Penn contains today. You make the call!

Arrowhead

Hello. I have aways been interested in motor oil statistics and studies over the span span of my 66 years of my life. Well, not so much when I was 3. (just kidding) While I was growing up and driving cars starting in 1964 I also got into mechanics and found that when I took an engine appart it was full of a very heavy oil sludge. Well I continued to work on cars even today and found a very decreasing presence of oil sludge. I see today a car with 200k miles is absense of any oil sludge. Ok so you say it is because of the detergents in oil today which is true. It is my belife that our modern oil today is what makes our engines last so long. Well let me put it this way, it is a contributing factor.

Tmistry

Ok, an oil thread...so, why not:

I've been running Amsoil. I'm going with Amsoil ZROD 20w50. It seems it has the best of what I'm after, which is:

- full synthetic
- high ZDDP/ Zinc Phosphates
-anti-wear / anti corrosives
- 20w50

Anyone else using this?

I was planning in switching to brad penn, but I don't know if there's an advantage, other than cost. Is the ZDDP in Brad Penn or other Semi Syn or Dino any different or better?

I like the idea of using what was used in the car originally, which obviously isn't a full Synthetic, but, it seems that the ZROD offers the upsides without the downsides.

vernon

I have had Redline 15w50 in my 964 for the last five years I change it every year my Porsche runs great. It was -23 this winter in Tahoe an I drive my 964 all winter every day I have it for fourteen years an it still runs like new. Vernon.

Tokyo Joe

Motul 4100 15W50 all year, all the time.

jellonailer

15w50. M1 or Motul 4100

GoKart

Which exact Brad Penn oil are you guys using? Looks like there are a couple versions of each oil weight. Partial synthetic...?

Mixter

Brad Penn Grade 1 Partial Synthetic SAE 20W-50 High Performance Oil

GoKart

Thank you!

Undutched

I had made some comparisons in oils in the last years. I have ran just about every viscosity and brand.
I cannot say that any oil were bad, but I can say some are more expensive than their performance (such as the Castrol 10w60).
I am now running Millers Nano oils and am very satisfied with them. The main reason is that the engine ran a lot smoother before taking it apart (it had roughly 180k on it).

I am trying to get some info on the Porsche Classic 10w60 to compare its specifications and compare, but cant find anything on its HTHS or Viscosity index.

Here are the oil I ran in my Porsche's. All were fine! (didnt have the porsche 10w60 yet!!)

Tmistry

Is anyone else running Amsoil V Rod?

Tempted to switch to Brad Penn, but I have a few cases of Amsoil to go through.

Seems the tech specs were very good for air cooled engines on amsoil vrod, which is why I'm surprised it's not more widely used here.

Navaros911

Since I'm slowly running out of Brad Penn (2 oil changes left - maybe 3)... I'm on the lookout to replace it as well.

The issue isn't the oil, but the difficulty shipping it here.

Brands in the local market are:
Mobil1
Castrol
Havoline
Liqui Moly (spelling?)
Shell (very limited)
Elf (very limited)

So from all these brands, what are my options for a good oil?

I am not worried about the mileage as I only cover 10k mi a year... so no issue on shorter drain intervals.

GoKart

Which Mobil1 15w50 is the correct one to use? Silver cap Ok?