94 gmc sierra - oil reccomendations?

[frankbo0gie]

hey guys, currently my truck is at 161k and i have just used havoline 10w30 and a super tech filter for my oil changes. I notice im losing a few quarts between changes, could it be the type of oil im using? i dont really have ne major leaks that i know of. would switching to a high mileage oil help at all with the mileage my truck has? thanks in advance guys!

 

[Pablo]

Probably rings are a bit gummy.

Perhaps an AutoRx treatment or two, maybe try a 15w40 after cleaning.

 

[dave1251]

Pablo really gave you the best advice. But after a year or so of use. The HM should help.

 

[glenncof]

You did not mention the maintenance history or your OCI.

For reference I have a 1997 5.7L GM at 138K uses zero oil in 3K OCI on dino and 2/3qt at 6K when using Syntec. BUT most of it's life has seen 3K OCI so it's clean/maintained and probably about as good as can be expected.

I have used HM stuff in another application and don't think it does anything substantial.

I prefer to change the oil rather than add a lot during an OCI. Maybe add 1 qt during an OCI and change it when it's at the bottom of dipstick. Dirty oil seems to get consumed faster at least in my other applications.

 

[Triple_Se7en]

Most times, only one OCI with High Mileage oils won't produce the results we like. Try three OCIs of High Mileage oils - giving it more time to clean the seals.