Why does my Thermo Pride oil furnace need constant restarts?
Brand probably has nothing to do with it. You'll need a service call, and should already have made one (yes, you had it serviced - but it's not behaving correctly, so you need another one.)

Clogged nozzles are a common issue, but not the only one - bad or dirty flame sensors, bad high voltage ignitors, bad control systems are all possible issues. You may need a new filter as well - if there was a lot of crud in the tank the new filter could be clogged.

If you have a power vent rather than a traditional chimney, the possible causes of abnormal shutdown increase.