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I know 2 people that have used it, they swear their mileage improves when using Zmax, I don't know to each their own, for forty bucks a treatment, the mileage would have to improve a [censored] of alot. I've never used any additives, don't plan on it either.

It is your time/money it is only a waste if you think so. I would have changed the oil when 1st getting the vehicle, after that if your gonna run a synthetic, I would go more than the 5K your are currently doing. If your sticking to 5K becasue of the warranty, I would run dino or something...

If it's a gasket, Auto-RX, HM oils and so forth won't help. They may help if it is a seal leaking around a shaft, but the likely hood of it helping a gasket leak are slim to none.

Originally Posted By: Kruse Originally Posted By: Hethaerto While we are on the Mobil 1 subject, can anybody enlighten us exactly what Mobil/Exxon refinery is/was down after hurricane Katrina? You have all seen these sign on the shelves saying that a refinery was damaged.... WHICH...

Originally Posted By: Bryanccfshr They don't care about Synthetic or conventional, they are based up oil sump volume, revolutions and cold starts. Very accurtate and the formula is off the minimum spec oil for the vehicle. They are different if they come with synthetic from factory. I...

Originally Posted By: GMBoy Originally Posted By: The Critic PP is fine for the interval recommended by the GM Oil Life System. Right on Critic. Not sure about the posters 6.0L, but the OLM on my 6.0L (GMC Sierra Denali) always seems to trigger between 5,000-6,500 miles. I use Mobil 1. It...

Frank & TallPaul, I agree with yall, that is what I'm saying/asking, I've been using the VR1 because of the high ZDDP, but I keep reading posts about SM being reduced and wanted clarification. The SM designation does NOT require lowered ZDDP.

Originally Posted By: tig1 Stay with M1 5-30EP and you will never wear out your engine. This web site has created the M1 histeria. See my UOA post on page 4, 07 Focus. TBN for this oil is 10.5 or better so your good for 10 to 15Ks at least. I'm staying with M1, it's just been slim pickens with...

I use VR1 30 wt in my '67 mustang. I was told by Valvoline and others that it has high levels of ZDDP, but on the containers it also meets SM. I called Valvoline tech support and they said one of those other specs islac? GF? something, I don't remember right now, calls for the reduction of ZDDP...

I normally run M1 5W-30 EP in all my vehicles, I run it for 10,000 miles and change it, no UOA or anything. With IKE and all the M1 was hit and miss so I bought Pennzoil Plat. Any problems with this? Vehicle this is in is a '06 Silverado with the 6.0L

Anyone have any hands on with any of these? Recommendations? Does any one outshine the others?

Some of the guys on the mustang forums add the ZDDP plus stuff, but it is kind of pricey. I used Valvoline VR-1 for the first 1K miles or so on my '67 mustang. I then switched to M1 Turbo diesel 5W-40.

Kinda of related, what is the difference between the Mobil 1 4T motorcycle oil and the V-Twin version???

The repetitive questions will not stop. New people are constantly "coming and going". This is just the way it is. I personally think it is a good thing. I see repetitive questions but i will still click on them and read the responses, there is always room to learn new things. I don't post much...

Originally Posted By: Tempest The Bill of Rights is to AFFIRM the inalienable rights of the people, it does not GRANT them. There was talk of not adding the Bill of Rights due to the fear that it might be construed in later times to mean that those are the only rights of the people. Sadly, they...

Originally Posted By: Zhukov Originally Posted By: M1Accord Originally Posted By: ARMY_Guy AR-15. -A My experience shooting steel plates show that velocity more than anything else will be the deciding factor on penetration. I have some hardened steel plates that I've shot with 5.56 (55gr...

TallPaul - my local autozone stocks VR1 in 30wt, might try them. I use the 30wt in my 67 mustang.

I tend to agree with most, kind of depends on the situation also. I'm in TX and using a .223 is not illegal to hunt deer, but .22LR is illegal, I would say that it wouldn't be my first choice though. The deer are smaller down here.

99GT - dead on with the FAL, but why the negative on M16, I have the M4 version -- never jammed once. I love shooting it!!

It seems like most are missing the OP's original question, does the AR-X "re-thicken" in the crankcase during cold temps??