castrol gtx

[A_Harman]

Originally Posted By: Clevy
Originally Posted By: dslofti
I have noticed on here I don't see much about castrol gtx. I now it use to be good for heat and high revving motors?



Huh ?

Oh. You mean you saw the commercial with the piston moving really fast and the guy with the deep voice saying it resists thermal breakdown just seconds before the piston seizes......


Yes, that was the commercial that influenced me to use GTX in the early 90's. I ran GTX in my Corvette track car and Suburban tow vehicle up to about 2002. I actually liked it better in my Corvette than the original Syntec 5w50. I used to drop the pan during the off-season and check the bearings and look at the piston undercrowns. The Syntec seemed to cause more undercrown deposits than GTX, so I switched back.

I think it's good oil, but it's more expensive whenever I compare prices on big-name conventionals. The PQIA did a comparison of conventionals about a year ago, and it was striking how similar the adpaks were between GTX and VWB.

 

[aquariuscsm]

GTX is the best of the best!!

Seriously though,It`s a really good oil. I used it in my 3800 Olds the entire time I owned it. Sold it with a lil over 300,000 miles because I needed a down payment for the 3000GT I wanted :^) Still ran like brand new!

 

[aquariuscsm]

Originally Posted By: A_Harman
I ran GTX in my Corvette track car and Suburban tow vehicle up to about 2002. I actually liked it better in my Corvette than the original Syntec 5w50. I used to drop the pan during the off-season and check the bearings and look at the piston undercrowns. The Syntec seemed to cause more undercrown deposits than GTX, so I switched back.


Were you running the GTX 20W50?

 

[BlueOvalFitter]

Originally Posted By: Ram01
Castrol is a proud sponsor of the NFL so its got to be good.

Don't forget about John Force.

 

[Eddie]

and Ashley Force)

 

[A_Harman]

Originally Posted By: aquariuscsm
Originally Posted By: A_Harman
I ran GTX in my Corvette track car and Suburban tow vehicle up to about 2002. I actually liked it better in my Corvette than the original Syntec 5w50. I used to drop the pan during the off-season and check the bearings and look at the piston undercrowns. The Syntec seemed to cause more undercrown deposits than GTX, so I switched back.


Were you running the GTX 20W50?


No, I was running 10w30 and feeling guilty about it because I had been seeing oil temperatures above 280F. When Syntec first came out, it was only available in 5w50, and I was happy to try it because I thought: "hey it must be better all around because it will give better cold flow and high temperature viscosity".

 

[S12]

GTX is a great every day oil. My dad used it in every car he owned and probably still does. My dad would change the oil in all of our vehicles every 3K or 4K.

Growing up we had a Toyota 4-runner with the good old 22re 4 cylinder in it. He bought that SUV with 200K on it and it got sold with 285K. I miss shifted that 4-runner going from second to third and put it in first racing a honda, over revved the engine high enough to super pressurize the cooling system and blow a heater hose.The engine subsequently overheated on my way home. The only thing that happened to that engine was a minor head gasket leak that developed before we sold it. Heck now that I think about it that engine was overheated three different time due to different circumstances.

If your doing short oil changes and the GTX is at a good price its a good choice.

 

[afoulk]

My guess is gtx is like vwb in that there are probably other additives in it that don't show up in normal every day voa's and uoa's. All the valvoline uoa's I've ever seen show very little wear metals, and while it too has a low starting tbn, it seems to maintain it just as well as others with higher starting tbn's. I wouldn't think twice about using it.