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#2886235 - 01/27/13 08:39 PM Next-Gen 5w-30 1158 miles '99 Suburban 7.4
rationull Offline

Registered: 04/28/07
Posts: 2789
Loc: California, USA
Got another in a chain of UOAs on my '99 Suburban tow vehicle. This is the first UOA (but second fill) after replacing the lower intake manifold gasket chasing the coolant leak shown in the analyses. Probably not useful to anyone but posting it here to reference from another thread.

#2886477 - 01/28/13 04:25 AM Re: Next-Gen 5w-30 1158 miles '99 Suburban 7.4 [Re: rationull]

Registered: 07/15/06
Posts: 2338
Loc: Magnolia, TX
Thanks for posting. One thing I've decided to do is stop using engine oils with high sodium content. It is very difficult to easily see contamination improvements with high sodium content.
2013 Toyota Tundra DC 4X4 5.7L FFV
2012 Toyota 4Runner 2WD SR5
2004 Honda S2000

#4454274 - 07/09/17 01:22 PM Re: Next-Gen 5w-30 1158 miles '99 Suburban 7.4 [Re: rationull]
rationull Offline

Registered: 04/28/07
Posts: 2789
Loc: California, USA
Reposting image due to hosting problem.