Pennzoil offers the new Natural Gas GTL oil under two separate names. I can buy Platinum 5w-30 or Ultra Platinum 5w-30. Same grade. One is a silver bottle and one is a charcoal grey bottle. But what is the difference? The only difference from the description on the bottle is that the regular Platinum "keeps pistons 40% cleaner" and the Ultra Platinum "keeps pistons 25% cleaner."
I'm not so worried about clean pistons, but I am worried about the lubricity of the oil. It will be going in a high mileage old car that I'm sure has plenty of "dirt" on the pistons anyway.
What is the difference in Platinum 5w-30 and Ultra Platinum 5w-30?
I was torn between the 10w-30 and 5w-30 grades of this oil. Does anyone know if the the 10w-30 and the 5w-30 are considered "thick 30 weights" or "thin 30 weights?"
Also, I was interested in the 0w-40 grade of this GTL oil. But I can't find it anywhere locally. Walmart sells just about all of this new GTL oil except that one. What's the deal with that?
Any opinions on these oils would be much appreciated. Thanks.
I'm not so worried about clean pistons, but I am worried about the lubricity of the oil. It will be going in a high mileage old car that I'm sure has plenty of "dirt" on the pistons anyway.
What is the difference in Platinum 5w-30 and Ultra Platinum 5w-30?
I was torn between the 10w-30 and 5w-30 grades of this oil. Does anyone know if the the 10w-30 and the 5w-30 are considered "thick 30 weights" or "thin 30 weights?"
Also, I was interested in the 0w-40 grade of this GTL oil. But I can't find it anywhere locally. Walmart sells just about all of this new GTL oil except that one. What's the deal with that?
Any opinions on these oils would be much appreciated. Thanks.