It was time for an oil change so I got the filter (Fram Tough Guard) and the oil. Got the truck on the lift, removed drain plug and let it drain out. Jacked up and blocked the truck so I could rotate the tires. Tires rotated, drain plug back on and removed the filter. Filled the new filter with an extra quart of 5W20 I had from last time and lowered the truck to add the 5 quatrs of oil. While I was adding the new oil to the truck, I noticed it was 20W50, not the 5w20 it calls for.
I have only driven it off the lift and and back under the carport. My question is can I leave it in there or drain and refill with the right stuff? I hate to waste the $25 but that nothing compaired to the $25,000 truck.... What are the reprocussions if I leave it in there for 3-4000 miles? I'm in south MS so it's in the 90's everyday, will that thin the oil out enough to run it until the next oil change?