API CJ-4 oils exceed the performance criteria of API CI-4 with CI-4 PLUS, CI-4, CH-4, CG-4 and CF-4 and can effectively lubricate engines calling for those API Service Categories. When using CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval.
After braces are removed, most patients will need to wear a retainer all the time for the first six months, then only during sleep for many years.our orthodontist will want to see you about every month or so in order to make sure the braces are exerting steady pressure on the teeth. To create more tension and pressure on your teeth, the orthodontist will make adjustments in the wires, springs, or rubber bands of the braces.
The retainer keeps teeth in place as the tongue, lips and cheeks adjust to their placement. And, the teeth reorganize themselves in the bones and almost âsolidify.â How long should you wear a retainer? We ask you to wear your retainer full-time for three months, when the teeth tend to move the quickest. You can take the retainer out to eat, to brush your teeth, and for special occasions (i.e., big dates and public speeches). But other than that, you should wear it at least 22-23 hours a day. Youâll notice if you take it out, the teeth will move quickly. After about three months, if everything looks good, weâll switch you to nighttime wear. Then, you donât have to worry about taking the retainer in and out at lunch, school, or work.