DRIVEN OIL VISCOSITY CHART MANUAL

Straight weight oil is never recommended for use in a system that requires a multi-viscosity oil. When does it make sense to use straight weight oil (SAE30) versus a multigrade oil (5W-30)? For best performance always follow the recommendations for motor oil viscosity in your vehicle’s owner’s manual. A large change in bearing clearances can result in poorer lubrication. In some circumstances, thicker oil can be used to compensate for increased bearing clearances (gaps between bearing and rotating shaft) that have developed over the years. The higher the number, the thicker the oil at a specified temperature. The higher number, following the “w” refers to hot weather viscosity, or how fluid your oil is at hot temperatures. For example, a 5W- motor oil will flow better at lower temperatures than a 15W- motor oil. The lower this number is, the less viscous your oil will be at low temperatures. The first number in the oil classification refers to a cold weather viscosity. What does the “w” in a grade of motor oil stand for? For maximum engine performance, follow the recommended motor oil viscosity and maintenance schedule provided in your vehicle’s owner’s manual. Using a lighter grade than recommended may result in excessive mechanical wear and reduced engine life. Using a heavier grade than recommended may cause decrease in fuel economy, higher engine loads and eventually shortened engine life. Tega Cay Wash and Lube does not recommend doing this.

DRIVEN OIL VISCOSITY CHART MANUAL

Is it ok to use 5W-30 in a car if the owner’s manual calls for 5W-20? For best engine performance, always follow the manufacturer’s recommendations found in your vehicle’s owner’s manual. Other manufacturers recommend the use of only one motor oil viscosity grade. Some vehicle manufacturers provide a range of recommended motor oil viscosity grades based on the outside temperature in which the car is driven. Is it ok to switch motor oil weights, for example, from a 5W-20 to a 10W-30?

You should follow the original equipment manufacturer’s (OEM) recommendation especially if it’s a requirement for the warranty.(Map & Directions) Location 2888 SC-160 Fort Mill, South Carolina 29708 If you’re all-out spinning it, you’ll want to make sure your oil can keep up. If you’ve just spent five or six figures on a machine, tacking an extra $20 to the lube bill won’t hurt.Īs a side-point, as spindle speeds starts to increase, the temperature tends to rise. Putting in a higher quality synthetic won’t hurt your machine, it might cost a little more, but the peace-of-mind could be worth it. The biggest benefits of synthetic oils don’t translate over to machine tools, but that doesn’t mean they’re bad oils. But, because your mill doesn’t get as hot, conventional oils will not oxidize nearly as quickly either. Longer oil change interval - because synthetics don’t break down or oxidize as quickly you can go longer between oil changes. More chemically stable and oxidation-resistant - these factors are driven more by temperature than anything else.Ĭombating sludge and deposit - coolant and chips will introduce more contamination than the lubricant, but it’s nice to have Protecting against high temperature - good for cars, but mills don’t get so hot Walking down the list (as outlined by Exxon Mobil): So if the viscosity index doesn’t matter as much, we should look at the other attributes to see if the value translates to machine tools. Synthetic oils get the higher viscosity index by using a more refined Base Oil. It gets cold our the shop, but not below freezing, and the inside of our mill has never been 1500✬. Critical for cars, but your CNC should never encounter such an extreme change in temperature.Ĭars will sit out in the snow below freezing, and then start up the internal combustion engine with temps up to 1500✬. This will keep oils flowing at low temperature, but not get too thin as the engine heats up. The biggest benefit synthetic oils offer is a higher viscosity index, meaning they can retain their viscosity over a wider temperature range. Synthetic oils are nice, but they don’t offer the same benefits in CNC machines as they do in cars.

Driven oil viscosity chart