GM 5.3L LS - 175k miles - first UOA - high lead (!)

[cfmistry]

So this was an 8k mile sample with Liqui-Moly Molygen 5w30. The truck has 176k miles on it now, so I'm not surprised its not perfect. High lead usually means bearing wear from what I've been reading, but that's not a common problem on the LS motor, is it? Any input?

Thanks,
Cyrus

 

[Chris142]

Might be a particle streak.

 

[aquariuscsm]

I always like to see single digit wear metals.

 

[Brons2]

where does lead come from in an LS? has bimetal bearings.

 

[OVERKILL]

Have you used any fuel additives?

 

[cfmistry]

Thanks for the replies guys. I do not use any additives as LiquiMoly does not recommend it (MolyGen has a complete package of them already).

I was in Western Maryland a couple weeks ago and filled in gas there 3 times. I wonder if maybe it was leaded and I didn't realize it?

 

[UncleDave]

Thanks for the replies guys. I do not use any additives as LiquiMoly does not recommend it (MolyGen has a complete package of them already).

I was in Western Maryland a couple weeks ago and filled in gas there 3 times. I wonder if maybe it was leaded and I didn't realize it?

Highly unlikely.

 

[ripcord]

Highly unlikely to have gotten leaded gas unless you were filling up at an airport.