Castrol EDGE 10W-30 with Fluid TITANIUM transforms its physical structure to be stronger under pressure to keep metal surfaces apart and reduces friction for maximum engine performance when you need it most.

Sludge can block your engines vital oil-ways like cholesterol – and if untreated it can rob an engine of its power and ultimately, its life. The tire producer / manufacturer and Canadian Tire uses this fee to pay for the collection, transportation, and processing of used tires.If GTX 10W-30 cost the same as Rotella 10W-30, for a 3-4k mile oil change in a later model econobox, I would use the GTX.

I will agree that all this UOA shows is that previous oils used, change intervals, and possibly lack of repairs/maintenance have made this engine what it is. Group III oils such as Pennsoil Platinum provide great cleaning and rinse performance, for those that feel the need to run a more durable oil in the cleaning and rinse phase, when compared to a dirt cheap dino oil. Castrol GTX 10W-30 is suitable for use in automotive oil and diesel engines where the manufacturer recommends an API SL/CF or earlier specification 10W-30 lubricant.The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products.

Cant comment on synthetic i really dont know how to read your UOA, if nothings wrong there should be no problems with synthetic.Castrol(R) GTX(R) High-Mileage(TM) - Designed for vehicles with over 75,000 miles and superior emissions system protection. Castrol® GTX® is a premium conventional motor oil that has been helping to extend engine life for over 50 years.

We use cookies (and equivalent technologies) to collect and analyse information on our site's performance and to enable the site to function. The difference would happen at extended drain intervals where the better lubricant will keep the engine cleaner. When you were running the Mobil, how much make up oil were you adding during each oil change interval? As a gently-driven DD which is using no oil, I don't see a whole lot of reason to change what you're doing.If the Amount Financed is not paid in full within 6 months, interest will be charged to you account from the purchase date and your total payments will be greater than the amount of the Amount Financed. While phosphorous is present in all engine oils for its ability to reduce wear, it is effectively poisonous to catalytic converters. I wouldnt do anything like auto-rx after coming to the conclusion our motors really dont need the stuff for 20,000 something miles the first time is 5000 miles i think, and your supose to pour it in with a fresh oil change another 3 or 4 times in steps to get it to work like advertised sounds like complete bs.