You can go ahead and search on Google and Youtube to learn about sludge if you are not knowledgable. In "severe" and "extreme" duty driving one challenge is sludge.
Sludge is the main reason I change the oil every 3000 miles. Most notably I found the best oil to be one with the most detergents. Through my testing and reviews of VOAs I found the best value oil to be Quaker State High Mileage Full Synthetic but the best oil to be the Valvoline family which has detergent rich formulations...
Read more
Sludge is the main reason I change the oil every 3000 miles. Most notably I found the best oil to be one with the most detergents. Through my testing and reviews of VOAs I found the best value oil to be Quaker State High Mileage Full Synthetic but the best oil to be the Valvoline family which has detergent rich formulations...
Read more