Over hear on the surface of the sun regular oil changes are at 5k kms (3,100miles) and 10k (6,200miles) on full synthetic. If i spend those 10k kms on road the oil looks like it can take another 10k. If it's summer and ~45-50c (113-122f) temps and I do some desert driving at 10k the oil looks like s***.
If you're mall crawling you can push on oil changes, if you're towing, wheeling your cruiser stay on top of the oil it's relatively simple and cheap conpared to the havic it causes when it all goes south. Luckily as a yota engine it can handle a bit of rough treatment. With higher end german cars especially I've seen many engine swaps due to neglect and our severe weather
If you're mall crawling you can push on oil changes, if you're towing, wheeling your cruiser stay on top of the oil it's relatively simple and cheap conpared to the havic it causes when it all goes south. Luckily as a yota engine it can handle a bit of rough treatment. With higher end german cars especially I've seen many engine swaps due to neglect and our severe weather