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.
The Tomb of the Bulls is an Etruscan tomb in the Necropolis of Monterozzi near Tarquinia, Italy. It is dated to 540â520 BC or 530â520 B.C. and was apparently commissioned by Arath Spuriana according to an inscription. The tomb is named after the two bulls which appear on one of its frescoes.