What Motor Oil Do Y'all Use In Your 5.3 Vortec?

Status
Not open for further replies.
With 195,000 miles on my 2005, I’m using Valvoline Maxlife 10w30 HM.
 
Last edited:
Originally Posted By: Chris142
Super-S. It drinks 5w30 so I usually use 10w30. Makes a huge difference in consumption


That’s interesting because one up to operating temperature there would be very little difference in viscosity. What else do you think is happening?
 
Originally Posted By: Snagglefoot
Originally Posted By: Chris142
Super-S. It drinks 5w30 so I usually use 10w30. Makes a huge difference in consumption


That’s interesting because one up to operating temperature there would be very little difference in viscosity. What else do you think is happening?
No idea. It drinks 5w30 to the tune of a qt in 1200 miles.Always Super-S. No measurable usage with 10w30 in my 5000m oci.
 
Last edited:
My 2004 Buick Rainier with the 5.3 V8 just clicked past 195,000 miles and does great on Mobil 1 5w30 HM from Walmart. I've always followed the oil-life monitor and typically change oil and filter (Fram Ultra) around 6,500 miles. Maybe down 1/4 quart between changes.
 
'01 Burban (Work truck) 5.3 almost at 250K miles


Been using harvest king full syn 10w30 since it's only $11 for 5 QT jug at local Atwoods farm store and I get a single semi syn qt for $1.75


Dave
 
My 2005 Silverado 5.3 just rolled 175k last week. I’ve been using Mobil 1 5w30 for the past few years, before that it was either M1, PP, QSUD & Valvoline Syn thru the years.
 
Status
Not open for further replies.
Back
Top