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Castrol gtx classic on sale

Purepony said:
Damn it’s not coming back :(
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Thats why I bought 15 quarts of it and I still have 20 quarts of vr1 when autozone had it for $23 for 5 qts last year and now its $37 for 5 qts. So i hoping im set for awhile.
 
My cars and the van just drink trough that 0-5W garbage they are using now. When I can find it I get the GTX 20-50. I will buy 3 or 4 quarts at a time. Two different countermen asked me what I use it for. High Mileage, high speed! I'm that guy up your butt in the left lane! I'll come right up on you but I won't draft you, I will back off to a reasonable distance hoping you will move over.
 
pjm8047 said:
Thats why I bought 15 quarts of it and I still have 20 quarts of vr1 when autozone had it for $23 for 5 qts last year and now its $37 for 5 qts. So i hoping im set for awhile.
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You noticed that too huh.
Yeah it went up almost double :(
I bought 8 and two vr racing
What a drag because even the filters went up too.

It’s a minimal increase but our gas is 525 a gallon
 
I think im good for a long time plus 10 qts of vr1 :lol:

E65300B9-3D46-4BF4-835D-25B27EF77972.jpeg
 
I add comp can zinc addictive to my solid flat lifter A-body build. Mechanical lifters really suffered with the loss of zinc.

I was told that hydraulic and roller is not as susceptible to lubrication failure with lower zinc than solid. But anything classic certainly should keep in mind.
 
Used to run GTX 20-50 for 10 years starting in 73. Hope they changed the formulation because it wasn't right back then. Way too much detergent and not enough lubricity......and took me 3 automotive engines and one motorcycle engine to convince me.
 
I never had a problem with Castrol GTX, until the zinc was removed. I then switched my cars Valvoline VR1. Problem solved.
 
Jerry Hall said:
I never had a problem with Castrol GTX, until the zinc was removed. I then switched my cars Valvoline VR1. Problem solved.
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What was the time period that you were using it? I started using it in 73 shortly after buying my motorcycle. Bought it used but it had very few miles on it and the local Honda dealer carried the GTX and they recommended it. Figured if it was good enough for the bike turning 9k it was good enough for my cars too.
 
Cranky said:
What was the time period that you were using it? I started using it in 73 when I shortly after buying my motorcycle. Bought it used but it have very few miles on it and the local Honda dealer carried the GTX and they recommended it. Figured if it was good enough for the bike turning 9k it was good enough for my cars too.
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I don't remember the date I was notified that the zinc was removed, but I know that I used it into the 90's. When I found out, I immediately changed oil and filters on all my cars. I haven't even looked at the current formulation. I'm completely satisfied with VR1 or in some cases Shell Rotella.
 
Cranky said:
What was the time period that you were using it? I started using it in 73 when I shortly after buying my motorcycle. Bought it used but it have very few miles on it and the local Honda dealer carried the GTX and they recommended it. Figured if it was good enough for the bike turning 9k it was good enough for my cars too.
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Bob Miller ran Baby Blue on Castrol GTX 20W-50 from 1974 until 1983. He did oil changes every 2000 miles, and raced the car throughout the 70s. I continued to use the Castrol as well, from 1983 to 1991, with changes at about 700 miles, done every fall. Guy who bought the car said he would continue, "if it ain't broke, don't fix it." Switched to VR1 20W-50 because of the zinc issue when I got the car back in 2013. Current owner is doing the same.

As I've posted earlier, the car's original engine has never been apart, the only work being new valve seals that Bob installed in the late 70s, premium stock from Hastings that are still good today. When I last drove the car, it had 119,000 miles on the engine, and used a quart of oil about every 500 miles. An interesting test mule for the old Castrol.
 
Photon440 said:
I still remember buying it when it advertised 'Liquid Tungsten'.
View attachment 1765416
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Never saw any of that around here but think that's a good idea! The stuff made in the states could/should have used the LT additive during the 70/80's. I quit using the GTX in around the mid 80's after complete tearing down a 360 Dodge engine. That's when I finally realized what was going on. Funny thing a buddy told me that it wasn't all that good but wouldn't say what wasn't good about it.
 
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