Convert from Castrol Syntec to Edge?

[TahoeSkiBum]

I have used Castrol Syntec on three of my cars for many years now. I went with the product because Mobil 1 caused me serious problems. It cost my $800 to have a main seal replaced on one car almost immediately after putting in Mobil 1, and another started having lifter noise immediately after converting to Mobil 1. I went to Castrol Syntec and the lifter noise went away permanently (four years ago now). I don't have any leaks in the numerous cars I converted from conventional to Castrol Syntec. So I don't believe or understand the positive stories I hear about Mobil 1 as I had such bad experiences with it. My theory is that the Category III oil with Castrol formulation and additives is superior for engines with a few miles and years on them than Mobil 1 Category IV. I'm thinking that may be why the Syntec has never resulted in damaged seals in my cars. Now I'm thinking of trying Castrol Edge, but wondering if the move from Cat III to IV is just not a good idea for a high mileage vehicle? I don't need failed main seals.
Anyone have experience with this?

 

[rg200amp]

Number one, Mobil 1 did not cause your seal to break. Number two, You can go from a Group III oil to a Group IV oil no problem.

Number three, WELCOME to the Forum!!

There is alot of information here. Take advantage of it.
If you do not mind the higher price, try the Edge.

 

[Dupree]

yes an almost immediate leak not caused by mobil 1, lifter noise well oils tend to make an engine sound a little different yes some are louder on particular engines for no reason. I have no doubt the edge is better than syntec, but by how much ? 8.50 vs 6.99 difference? you'll have to decide that

 

[TahoeSkiBum]

Thanks for the feedback. I've been satisfied with Castrol Syntec, but don't think it is good enough for extended use. I change it every 3,000 to 4,000 miles just like regular oil. In my experience, my engines sound smother and quieter than other Dino or Cat IV oils I have tried. I got into changing all of my cars with it at a short 3,000 miles because I noticed that I could hear the engine valve train clatter on a previous car I owned once the Syntec hit 3,000 miles. That was an older Ford Taurus 4 cylinder which I don't have anymore. You could hear the clatter at 3,000 miles and it would go away completely with a fresh oil change of Syntec. I realize that the engine obviously had some wear, but thought that the oil must start to break down at the 3,000 mile point and not be providing the same level of lubrication at that mileage.

 

[KW]

Try it in one of your cars and see how you like it. It is surly a fine oil and since you are looking to extend your OCI's some go for it. Castrol makes fine products.

 

[postjeeprcr]

From what I have seen and read Edge is not a Group IV oil.

http://www.castroledgeusa.com/assets/pdf/EDGE 5w30_MSDS_1.31.09.pdf

 

[TahoeSkiBum]

That is interesting. Sounds expensive for a Group III oil. Wonder what is so much more special over Syntec? Wonder how they can claim it holds up for 15K miles if it is dino base oil? I have never had a problem with any Castrol oil so it is probably still a very good product, just question the value given this info.