Just went to advanced last night and bought two of their specials. 5 qts of castrol syntec and pure one filter for 24.99
Anyone use or have uoa's on syntec. Any good?
Anyone use or have uoa's on syntec. Any good?
tig1 You not what you speak. M1 is a blend of Some 3 mostly 4 and 5. I do not study their MSDS's or run their products through chemical analysis on a weekly basis. It was my understanding that the normal M1 products are G3 and that only the EP (Extended performnce) products were G4. [COLOR=#CC0000 said:Regardless, there was a time when all M1 was good for 15,000 miles (now only the M1 EP products are marked as such) and when a consumer sets their OCI's based on those performance specs (which I did) it's certainly a suprise to suddenly reduce the performace of a product. so, since I dont know what I am talking about, why are the standard M1 products no longer guaranteed for 15k miles like the EP's are? [/COLOR]
tig1 You not what you speak. M1 is a blend of Some 3 mostly 4 and 5. I do not study their MSDS's or run their products through chemical analysis on a weekly basis. It was my understanding that the normal M1 products are G3 and that only the EP (Extended performnce) products were G4. Regardless said:Tomcat,
I started using M1 31 years ago and at that time M1 said to go 25,000 mile on OCIs. They soon droped that because people with cars under warranty were not folllowing they warranty requirements which could cause problems for the customer.
With all that said you say M1 gauranteed their regular M1 for 15,000 mile. Not so, they never did. Someone gave you bad info. What they do say is follow your cars warranty requirements at least till the warranty mileage is up. Now I have used M1 for 10,000 mile OCIs since 1978 with great success. Never had an engine failure with long lived and very clean engines. If you want a detailed history I'll give it to you.
Now the M1 EP line is gauranteed for 15,000 miles which I have talked to them about, but even with the EP line M1 still says to follow the warranty requirements untill the warranty is up.
You also said you used M1 for severe service in your truck, and apparently the oil served you well. That's good news. May I reccomend the Truck and SUV formula version of M1. It will work well in your truck.