When they do your chains are suppose to change your oil at that time. If they were not sloppy with the rtv then you should be able to wait like normal for next change. I changed my oil again after my first crank up because I had a little water get in my oil pan after removing my waterpump, but with them doing just the chains & tensioners they shouldn't have had that issue. You should be fine. Unless they were stupid and did not change your oil liek they were suppose to. Check your receipt for it listed there.