Finally added the tcw3 to my gas tank today. I ended up grabbing the cheapest clear bottle of gumout at walmart to use as my measuring/filling bottle.

welcome to the club

Perhaps as some incentive, I would think that TC-W3 would benefit cars that run on 87 more, as well as motors with 4 cylinders. The combustion process of 87 is much wilder (more BOOM! in 87 compared to 93's smooth burn)
and with a 4 cylinder car, each cylinder is bigger. I imagine your wife's suby has a 2.4 opposed 4? That would be four 600cc cylinders. Compare that to the Vq30 with six 500cc cylinders. Each cylinder in a VQ35 (583cc per) is still smaller than the 4 bangers.

how is everyone doing with this?

I probably have done... 8-12 tanks now

Ok today i finally added Castrol TC-W3 2 cycle outboard motor oil into my wife's Maxima, will go fishing tomorrow about 200 km's out of town so will test new additive and see if i notice any difference.I also added TC-W3 into my work van which is not fuel injected it's an old Chevy with a carburetor,i hope i didn't mess up and this works with carburetors as well.

I switched from Penzoil to Coastal recently and what I found that was interesting was on Coastal's label it reads, "Multi-use" and they show all kinds of gas powered equipment you can use this stuff in. That alone should tell non-believers that this stuff is safe for gas powered engines. It even had a scale on how many oz to add per gallons.

I still get crap from one of the G8 cornballs on the other forums but I know better.

Yeah, those Pontiac drivers, I tell ya

just as a further assurance of how safe it is. I have used tcw-3 in my gas for over 4,000 miles, and it has had no ill effects on spark plugs/O2 sensors/ Cat converter. The Cat was checked yesterday, since I was doing some exhaust work on the car, and it was clean(with normal soot deposits for a 13 year old cat).

I'm 3 or 4 tanks in with tcw3 now. Only thing I really noticed is that I can smell it when a gob of it passes through the injectors and is burnt in the combustion chamber.

Or it could just be my oil burning that I smell.

^^ probably oil as the tcw3 mixes very well, so I don't think a gob can even happen.

When you first start using TC-W3, most noticeable in the dino walmart version, TC-W3 cleans out a ton of carbon in your IM(thanks to the EGR)/combustion chamber/exhaust. Your tailpipe should look black, too. After a few runs, the smell should go away.

I experienced the nasty smell, too. Now that I've been using it somewhat regularly, no more smell.

The words I was looking for were more along the lines of a concentrated amount.
My IM is clean. I degreased it inside and out when I installed the engine in February. My EGR is removed and I had a catch can installed on the PCV valve up until a few weeks ago. My tailpipe has been black for years. Though I have no doubt that there is/was carbon deposits in the combustion chamber as I had cleaned a bunch off of the intake ports when the engine was installed.

How long have you been using it? Define somewhat regularly, every other tank or thereabout? Im nearing the end of consecutive tank #4 with tcw3.

Been using it about 6 months give or take. Now I only put in TC-W3 when I completely fill the tank, which usually around every 3rd or 4th visit to the gas station.

I use it every tank...I only gas up when I'm at 1/4 or under anyhow, so I throw in about 3.5 ounces at each fillup

All the time...PERIOD. I look at the gallons I put in the tank, do the math & add the oil @ 1oz./5gals.
It's not rocket science!

I used to do it religiously but now.....meh. Every once in a while is OK with me.

Someone posted on a forum I frequent that adding TCw3 oil to your gas improved gas mileage, but couldn't explain how. So I started searching for answers because I'm not just going to dump something in my gas tank unless I know how it works. My search led me to a site that linked to a thread on here titled "Best Additive for Your Car? Pennzoil Marine 2 Stroke Oil". To my disappointment the link didn't work, so I did a search and discovered this thread, and that the old thread was deleted. I had an idea for you guys and did see anybody post it here, so I registered so I could.

If you would like to see the old thread here you go:

Best Additive for Your Car? Pennzoil Marine 2 Stroke Oil

I don't know if its all there but there are 18 pages of posts.

This will probably be my only post here, I wanted to read the original thread and found it so I figured I would at least share.

Just scooped up the last two quarts of penzoil premium plus TC-W3 my local autozone had. Will update after the first full tank makes it through.

Results are usually more apparent after your 2nd or 3rd tank.
Report back then.

I have doing this for a while. I just needed my emissions checked and it passed in the lower 20 percent for HC and co. Nox was at 50 percent

Fuel Eco is about 30/31 mpg. I have 214000 miles

I have been using it for about 5 fill ups, and my mileage has increased to near 20 mpg, mixed driving, and engine is definitely smoother running. 4/5 oz per gallon.

No, you mean 4 or 5 oz per FILLUP, right? It's ONE ounce per 4 or so gallons.

My bad, I had meant one ounce to 4/5 gallons. Haha.

What if u use more then 1 ounce of the oil to 4 or 5gallons of gas what would happen??

Depends on how much more. Anything more or less than the recommended ratio will negate the benefits. My best guess if you go WAY over, is the risk of fouling spark-plugs just like in a 2 stroke engine. If it's really smoking badly, there's the risk of fouling the catalytic converters. Which might cause permanent damage, as with any engine burning a lot of oil. If you did go way over, I suggest putting straight fuel in ASAP, for 2 full tanks & start from scratch with the correct ratio.

put some in my challenger

on the 2nd tank of it

AND???

I just bought my 2nd gallon of the 'wally' brand. Started running it in the G35x since I got it. It used about 1/8" on the dipstick worth of oil during the 1st 1K miles & stopped at that point. I'm now about 1/2 way through my 1st oil change since owning the car & ZERO oil use. Could be the Nissan dealer used better oil or the TC-W3 did it's magic. I'm not sure, but the other benefits i.e. smoother/quieter running engine, slight gas mileage & low end power improvement are worth the $13/gal. <IMHO>

not much of a change yet

gotta give it some more time

It honestly takes 3-4 tankfuls to feel the difference. But after 2 tanks the engine should start to run a tiny bit smoother/quieter. I've found by going w/ the 1oz./4gal. ratio tends to slightly speed up the process.

The G8 has a shaky idle by default and when I used this stuff, it smoothed it out. Is the Hemi the same way?

hemi has a similar idle - the LS and hemi are similar motors.

i THINK it is getting smoother but it hard to tell - gas stations are starting to get rid of the ****ty winter blend gas so that might be helping too

I noticed a huge difference after my second tank full.

I'm interested in this and I'm thinking I should start using this.
-Is this still working for you guys?

- if yes, For my 2002 Maxima, What materials and exact quantity do I need to accomplish this?

Everything you need to know is spelled out in the very first post.

2oz for every 4-5 gallons of fuel. I one of those miniature jam jars, you know the ones you get at the hotel breakfast bars; anyhow's those hold 1 oz, so 2 of those. I've been using this for a month now, and WOW! It works just as everyone's said, my 3rd gen "BuTTa", runs as smooth as butter now , and so does my Jetta MK3 as well. I'm burning the generic Coastal brand.

Instructions say one ounce.
You're putting in too much.

I guess I'll cut back .... Well I use 2oz per fill-up; my BAD!

Would this work?

http://www.trademe.co.nz/motors/car-...-802854698.htm

VERY hard to get Pennzoil stuff here in New Zealand.. so looking for alternatives.

It says it's TC-W3 so I say you're good to go.