Big Cube LT-5 Engines and oil samples - ZR-1 Net Registry Forums

emmvette · 01-18-2016

I sample oil when changing to keep an eye on things. I have a 402 and have had steady high iron numbers and a steadily increasing potassium for 2.5 years (coolant leak). The engine has been a 402 for 20 years, and has about 24k miles total now.

I'm curious if others with big cube LT5's do sampling and if their results are typically a little higher than 350 ci LT's. Feel free to PM me or other if your not comfortable posting.

I have no outward signs / reasons to be concerned, yes it uses oil, but no more than any other 1990. No "excessive" smoke, Power is very strong as always, and it doesn't make noise other than a great exhaust note.

The engine is a LPE and so should have LA Sleeve iron liners.

01-18-2016	#1
emmvette Join Date: Jul 2013 Location: Central Iowa Posts: 190	Big Cube LT-5 Engines and oil samples I sample oil when changing to keep an eye on things. I have a 402 and have had steady high iron numbers and a steadily increasing potassium for 2.5 years (coolant leak). The engine has been a 402 for 20 years, and has about 24k miles total now. I'm curious if others with big cube LT5's do sampling and if their results are typically a little higher than 350 ci LT's. Feel free to PM me or other if your not comfortable posting. I have no outward signs / reasons to be concerned, yes it uses oil, but no more than any other 1990. No "excessive" smoke, Power is very strong as always, and it doesn't make noise other than a great exhaust note. The engine is a LPE and so should have LA Sleeve iron liners. __________________ [CENTER][SIZE=4][COLOR=red]1990 ZR-1 Red / Red[/COLOR][/SIZE][/CENTER]