Of course, these oil changes & valve adjustments are relative to the life expectancy of the engine. I think (hope) Jims 600 hr est is conservative, my oil ch schedule exceeds OEM specs, I am ballparking the depreciation factor to 900 hrs @ 150 hrs per year = 6 years.
The 4th-century Tomb of the Lionesses consists of a small chamber with gabled roof. The painting depicts flying birds and dolphins and scenes from the life of the Etruscan aristocracy. The 6th-century Tomb of the Hunting Pavilion shows the view seen through the transparent fabric of the pavilion.
These were coffins carved to the outline of the mummy's body and decorated with the face and wig of the deceased. They not only copied the mummy's form, but they also served as substitute bodies in case the mummy's body was lost or destroyed. As time went on, anthropoid coffins were decorated with an increasing number of scenes and inscriptions. Around 1650 BCE rishi coffins were