07GTS
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- VEGTS BUILT BLOWN E85
IMO use the thinnest oil u can that keeps the pressure safe for what the engine is doing, my thought on ''thin'' is a 5-30 or 10-40 should be fine for most LS, OR just give the engine what it likes, if say u have a nice quiet engine then it starts to tick and u think its getting older then use a thicker oil and the ticking stops u also have to think why was it ticking and it prob has the same issue still but its just masked now with thicker oil, as mentioned more pressure is less flow if the same pump is used