CHJ In Virginia

Now that Mobil has changed the formulation on M1 and removed many of the anti wear additives per the new EPA regulations, it is time for a change. I have run through my stock of pre formulation change oil and must find a substitute. Red Line and Royal Purple come to mind as alternatives. What brand and viscosity do you run ? Where is a good source to buy case quantity inexpensively ? How many events do you run prior to a change, I usually run 2 weekends of track days between changes. Thanks for the input.

Woods

AMSOIL Mine takes 3 gallons now, A.R.E Drysump

sperkins

I thought 15w-50 M1 still had the high levels of zinc and phosphorus?

c4cruiser

If the EPA mandated changes to the Mobil-1 formula, won't that also affect other oil brands??

I would think that M-1, Pennzoil, Castrol, and the other brands that are full-synthetics will continue to work fine for high-RPM operation. It won't be just a track day issue; drag racing, autocross, or anything else where the motor is subject to high RPM's and heavy loads won't be any different.

If you want or need high levels of zinc and phosphorus, doesn't some brands of diesel engine oils have increased levels of those elements?

CHJ In Virginia

In my understanding the new restrictions apply to all 30W and lower viscosity passenger car oils. The EPA mandated reduction in Zinc and Phosphorus down from 1200 PPM to 800 PPM. I have been running the factory recommended 5W-30 but will probably now run a 10W-40 and look for the one that has the highest level of additives. Looking at the Amsoil 10W-40 marine oil as it has a very high level of additives and I know several other Z06 Vettes running it last season without problem.

parkerracing

If you have a roller cam, you should be alright. Those with vintage cars with solid or hydrolic lifters are going to have to be careful. Or do a cam swap not unlike when heads needed bronze guides put in when unleaded became the norm. /:\

Z07coupe

I thought I heard that there is a classification of off road oils (racing oils) and that they were exempt from the EPA regulations. Is that correct information or incorrect?

froggy47

Sidney004

Mobil still makes a fine oil, they have supplemented other antiwear additives in place of ZDDP, which modern Vettes don't require anyways; but to answer your question, I use Redline 10w-40(high moly levels) and regular oil analysis in my track driven LT1(80+ track hours.)

lbs90ZR

After calling Redline they said they aren't required to report on the performance oil, so after few thousand miles on 10w30 the zinc and phosphorus levels tested on mine were 1121 and 927, think the new sm levels are around 800 maybe, for a comparison before the levels were lowered valvoline 20w50 non-synthetic had 1213 and 988. Also for what it's worth Redline had 500 to 600 units MOLYBDENUM DISULFIDE and most other oils are around 10 units witch is probably from ring wear and none in the oil actually which they say is a real good lube. Castrol TWS 10w60 is 8 units Moly.After being used in a transmission. Don't know what's in Amsoil?

Using RL 10W40 now so don't have any numbers on that yet.

Bobs the oil guy has a lot of info on oil.

Since you change your oil so much you could probably use RL racing oil since it's low in detergents but real high with the good stuff.

Getting ready to send 10w40 in for test after 1000 miles and most of it was at the track. Afraid I left it in too long. Hope the moly saved me.

Jegs is cheaper than summit for RL.

argonaut

Below is a scan of my report from Blackstone labs. This is for M1 5W30. First report (on the right) was after 2 track days. Second report on the left was after 4 track days. This is in a 4.6L Ford Mod motor (Mustang GT). I don't know if this was 'before' or 'after' the change in additives mentioned above. This motor is said to be pretty hard on oil, very tight tolerances, need to wind it up to make much power, runs hot. According to the report the M1 is doing pretty well but as you can see the zinc and phosphorus are much lower than lbs90ZR reports for Redline.....Interesting.

Aardwolf

I've been using Schaeffer's lately. http://www.schaefferoil.com/motor_oils.html They make a 5-40 in the 9000 and a 15-40 in the 7000 plus the racing line.

Sidney004

I believe they use Molybdenum dithiophosphates or Molybdenum dithiocarbamates, Molybdenum disulfide is favored as a solid lubricant. I am sending in my oil analysis which includes 13 track hours on Redline 10w-40. I will post it on Bobistheoilguy, you should do the same and we will compare notes.

Nimo

From mobileoil.com:

I've been using Mobil 1 15W-50 in my race car. How are these new oils better/different?
Mobil 1 15W-50 is a higher viscosity oil that delivers a thick oil film for protection of high performance engines. While Mobil 1 15W-50 can be used and is recommended for both street and track use, the new Mobil 1 Racing oils are only recommended for use in race engines at the track. Mobil 1 Racing 0W-30 and 0W-20 are lower viscosity oils designed to increase power output versus higher viscosity oils. Most importantly, Mobil 1 Racing oils are formulated with anti-wear (Zinc/Phosphorus) chemistries at twice the level of automotive street oils to protect race engines including high loaded flat tappet designs used in the NASCAR series.

Is the non-recommendation for street use related to the new EPA regulations?

/Nik

waddisme

Falcon

I switched to Redline.

Sidney004

High phosphorus levels poison the cats if there is excessive blowby.
It is not due to EPA regulations but rather the industry's self imposed standards: http://www.lubereport.com/e_article0...ppj3,a101R1PT+

Lower ZDDP should contribute to less piston/ring deposits.

lbs90ZR

Planning on sending in mine tomorrow so should have it by the end of the week. That's about the same amount of track hours on mine also with some street miles too.

ghoffman

I use Royal Purple #21 racing (like a 5w-30 or so) synthetic in my C6Z. It has been trouble free for 3 track seasons (21K miles total). It is a really good idea to check the inside of the filter for any metal every time you change the filter. We sell the cutter made by Joe's racing, and I think it is very cheap insurance, and the tool is very cool anyway!






http://hardbarusa.com/hardbar/produc...roducts_id=117

GS023

Anyone looked at the Valvoline full synthetic?