>>28466645
Almost missed your question

Do your oil changes in shorter intervals, I wouldnt say half the interval since thats too excessive, but cutting the service interval by 25% will make a huge difference. I also get customers that comes in for oil changes and theyve only put 10km (yes 10km) in the last two years and i drain out brand new oil. Please dont do that, its still good, dont always follow the dates for service intervals, just use your judgement.