UOA for a Turbo Supra

Lagtime · Jun 23, 2003

Hi folks. First time poster, long time lurker.

This site is a real find for me (I'm sure others among you felt the same when you came across it).

Anyways, on to the subject at hand. I have a 1994 Supra still using the stock twin turbos. I push them hard, 18-20 psi of boost, ~450 rwhp. I use M1 10-30 changed every 9 months or so. Below I've linked my last 3 oil samples from Blackstone Labs. Any advice/comments would be appreciated.

TR3-2001SE · Jun 23, 2003

Reports like this one is why I switched to this oil. Excellent Report!!!

mph · Jun 23, 2003

Is the most recent one the first one on SuperSyn? I wonder if that's why the lead improved so much? Looks good.

Lagtime · Jun 23, 2003

mph, this is embarrassing to admit, but I can't recall if the last change was to SS or not. Looking at the Moly, Boron, Calcium and Zinc it appears to be a different additive package. Maybe one of the gurus will see this and be able to tell.

The first 2 were with TriSyn.

Lead may have come down for other reasons as well. After the first report (14 ppm) I started to worry about dry starting the car (it can sit for up to a month w/o being driven). So anytime it sits more than a week or so I pull the starter relay and jumper 2 contacts together, this spins the motor w/o any ignition, fuel injection etc. Once the oil pressure light goes off I figure I'm OK.

Between the 2nd and 3rd change I disabled the neutral safety switch on the clutch. I have a heavier than stock pressure plate and started to wonder if some of the lead was thrust bearing wear.

wizzells · Jun 23, 2003

I was wondering if this was the first run on SS also...what did you use before?

Bill J. · Jun 23, 2003

Lagtime, the results look real good.

I highly recommend taking advantage of the Blackstone Labs / Dyson Analysis Package #46. See the "Site Supporters" section on this forum. You will be very pleased with Terry's customized recommendations for your vehicle(s).

Patman · Jun 23, 2003

quote:

Originally posted by Lagtime:
mph, this is embarrassing to admit, but I can't recall if the last change was to SS or not. Looking at the Moly, Boron, Calcium and Zinc it appears to be a different additive package. Maybe one of the gurus will see this and be able to tell.

It looks to me to be either SuperSyn, or the last minute SL formulation of TriSyn. It's got moly in it, which SJ TriSyn didn't have, but it's also got a lot of magnesium in it, something SuperSyn has very little of, although the 200+ ppm in your current sample could be some leftover from the previous run, since the previous runs had a whole boatload of magnesium in there.

buster · Jun 23, 2003

Very nice. I'm a big fan of M1 10w-30. We constantly see good results with this oil. And I can buy it anywhere!

Lagtime · Jun 23, 2003

quote:

Originally posted by Bill J.:
Lagtime, the results look real good.

I highly recommend taking advantage of the Blackstone Labs / Dyson Analysis Package #46. See the "Site Supporters" section on this forum. You will be very pleased with Terry's customized recommendations for your vehicle(s).

Thanks Bill. I'll look into the Dyson package.

Lagtime · Jun 23, 2003

quote:

Originally posted by buster:
...And I can buy it anywhere!

This is a big plus. I've though about trying Redline 10-30, or possibly 10-40, but I'd have to order it. It's nice to just drive down to the local Walmart and pick up the M1 in a 5 qt. jug.

Lagtime · Jun 23, 2003

quote:

Originally posted by Patman:
It looks to me to be either SuperSyn, or the last minute SL formulation of TriSyn. It's got moly in it, which SJ TriSyn didn't have, but it's also got a lot of magnesium in it, something SuperSyn has very little of, although the 200+ ppm in your current sample could be some leftover from the previous run, since the previous runs had a whole boatload of magnesium in there.

I know I used SS this change, but it's going to be a long wait for the next UOA unless I do one at 6 months.

Any opinion on the drop in lead?

nicrfe1370 · Jun 23, 2003

quote:

Originally posted by Lagtime:

Any opinion on the drop in lead?

Just a quick glance at the additives shows that on your most recent analysis, Moly, Boron, Phosphorus and Zinc are all significantly higher than your first two analyses. My guess would be that the increase in those additives suits your motor very well, resulting in the drop in lead.
I like your idea of turning the engine over occasionally when you are unable to run it. Seems to be working too.

By the way, welcome to the forum, I'm a big fan of turbo japanese cars, good to see a mkIV Supra.

[ June 23, 2003, 09:10 PM: Message edited by: nicrfe1370 ]

Lagtime · Jun 23, 2003

quote:

Originally posted by nicrfe1370:
By the way, welcome to the forum, I'm a big fan of turbo japanese cars, good to see a mkIV Supra.

Thanks for the welcome. The MKIV is a keeper.

Lagtime · Jun 26, 2003

quote:

Originally posted by Eiron:
Hi Lagtime,

The report says, "Drag Racer." Is this car only used at the track? I'm just wondering why you have so few miles for each 9mo interval. Also, is the first 1,148mi sample the first time you used M1 in the car, & how did the driving habits change to double the mileage over the same period of time for the subsequent samples?

Welcome aboard!

-Greg

I drag race it, but it's more of a weekend fun car than a race car.

The mileage was low the first interval because I fried the clutch (I tried a metal 6 puck. It welded itself to the flywheel & pressure plate the second time I had it at the track)and it took me a while to get around to changing it (busy), so the car sat for a while. That was also a very busy year for me at work, lots of travel and weekends away.

Since I've owned it (Mar 1999, bought with 67k miles on it) I've used M1 10-30.

Eiron · Jun 26, 2003

Hi Lagtime,

The report says, "Drag Racer." Is this car only used at the track? I'm just wondering why you have so few miles for each 9mo interval. Also, is the first 1,148mi sample the first time you used M1 in the car, & how did the driving habits change to double the mileage over the same period of time for the subsequent samples?

Welcome aboard!

-Greg

porterdog · Jul 8, 2003

RE: dry cranking- in the turbo miata circles it's recommended to bypass the clutch switch so you can crank it without having to hold the clutch down. Works great, as long as you leave it in neutral, lol. DSM's are also prone to premature thrust bearing wear once fitted with heavy clutches.

Just fyi,
Robert

buster · Jul 9, 2003

This is another great report.

Lagtime · Jul 9, 2003

quote:

Originally posted by porterdog:
RE: dry cranking- in the turbo miata circles it's recommended to bypass the clutch switch so you can crank it without having to hold the clutch down. Works great, as long as you leave it in neutral, lol. DSM's are also prone to premature thrust bearing wear once fitted with heavy clutches.

Just fyi,
Robert

I never dry crank the motor using the ignition. I pull the starter relay from the fuse box underhood and jumper across 2 terminals. This spins the motor w/o any ignition, fuel etc. Tranny in neutral.

I disconnected the neutral safety switch a while back.

[ July 09, 2003, 06:48 PM: Message edited by: Lagtime ]

supraturbo · Jul 9, 2003

Your kinda stuck between a rock and a hardplace with dry cranking the motor. Most of the 2jz's that have suffered crank walk occured soon after people installed stand alone engine managment computers, to tune the computer the engine would be cranked a considerable amount to get a baseline. That coupled with the heavier clutch should give ya something to think about. There is no proof just thought on that theory. Other than that the 2jz is one of the greatest engines ever built.

davefr · Jul 14, 2003

This report looks very good. I also have a twin turbo Supra and have been considering switching from Redline to M1.

I've also been curious if 10W30 is the best viscosity for the 2JZGTE? I'm wondering if a M1 0W-40 would be better or possibly Delvac 1 5W-40?

I guess your report shows that the engine is perfectly happy with M1 10W30.

UOA for a Turbo Supra

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