Join Date: May 2012
Location: Big Rapids, MI - Ferris State University
Coyner Jr is offline
Re: High Mileage Oil?
I personally, along with many others that I have talked to, would never use high mileage oil in a motor that doesn't have at least 150,000 miles on it. There is no need to. So long as you keep your service intervals constant (3,000-5,000 miles) and you buy oil that isn't store-brand and use a good quality oil filter (NOT Fram), you shouldn't have any issues running normal oil (dyno or synthetic) up to 150,000 miles. Then I would make the switch to high mileage.
Since you just rolled 100,000 miles on your odometer, here is my suggestion.
Keep using the Castrol GTX (regular conventional) that you are using now, and your 3,000 mile interval. Consider switching to the full synthetic Castrol. I don't know what brand of filter you use, but consider using Wix, CarQuest Blue, Mobil 1 or Purolator PureOne (the yellow one). Yes, they are expensive filters but the quality of these filters speaks for themselves. I cut a Wix open after being on a car for 7,000 miles and the filter element looked brand new (it was oil stained, of course). There was absolutely no damage done to anything. It looked perfect, minus the fact that there was oil in it. ( :P ) Good quality filters play a huge role in how long your service intervals can be and how clean your oil stays throughout the time it's inside your engine. Me personally, I run Mobil 1 Extended Performance and a Wix #51036 oil filter on a 5,000 mile interval. Stays golden brown throughout the entire change and it burns NO oil. No leaks, minus a screwed up drain plug from the truck being taken to a quick lube before I owned it. When you hit 150,000 miles, switch to the high mileage version of the oil you have now.
Hope this helps.
2000 Chevrolet S-10
Ex. Cab | 4.3L "W" | Auto | 4x4 | 3.73 Posi-Traction
Dual Exit Exhaust w/Flowmaster Super 44 Muffler | eBay "Cold" Air Intake
Hankook Dynapro's | U.S. Wheel 844's
PCMForLess Custom Tune
-Sold: 1994 S-10 | Std. Cab | 2.2L | 5spd. | 4:10's
I once purposely did a rolling 35-70mph burnout past a prius just because it had some smart ass eco loving bumper sticker on it.