It is a Fram Wear Guard for filter, did same with the AC filter too C65. I bought 4 Valvoline High mileage oil filters, box claim they filter much more, too much restriction on them with extra filtration?
Thanks MC, will check a few of those things out, thanks for the detailed and informative trouble shoot options.
DH, possibly if it is piston slap, how serious is this, I have heard some people run their engine a long time with some slap?
Oil OCI's todate on this 3.1. On getting the car at 100k miles I put in 0-30 XD3 HDEO group 4 POA, tbn 12, 100C visc of 12, found nearly 3/4 litre oil consumption (no leaks) in 3k miles oci, engine loudest at startup with this syn 0-30.
Second OCI with one litre conv 10-30 SL oil thrown in with 3 litres Esso XD3 0-30 hdeo syn oil there was 1/2 litre consumption in 3k miles.
Now at 2K miles with a blend of (2) 15-40 conv XD3 HDEO liters and (2) litres 0-30 syn XD3 syn oil, very little oil consumption, bit quieter engine at startup now with this blend, but start up noise is there. The oil does not get excessive dark, engine was maintained good from what brother of previously deceased owner told me. This brother owned car briefly and told me engine did not consume oil in his OCI periods.
Considering what is happen with my OCI oil consumption results, does this shed light on the engine noise?
And should I consider straight 0-40 XD3 syn this winter when it can get down to -40F (0-40 still has -60F flow rate and 15.7 visc at 100C) (0-30 12 visc at 100C and still -60F flow rate) or a blend of 0-30/0-40 XD3 syn?
Do chev engines like a heavy oil like my Nissan QR25DE which also has a steel time chain needing good heavy lubricatiing oil?
lot of questions, sorry bout that guys, should have give OCI background on first post.
thanks much,
Cyprs