pennzoil ULTRA PLATINUM 5W-30 OIL

[STL_G8GT]

so side note - this morning gertrude starting making lifter noise. loud lifter noise.

Or I think that's what it is.

sad am I.

149K on the clock

Booooooooo. Cam swap time.

[AVIDMOTION]

Mine always ticked if I was low on oil(rare) or the oil was on the dirty side. I would quickly replace oil and filter and it would go away. In your case I would buy 2 jugs on sale good oil, change oil and filter and see if it went away. This way you don't waste good synthetic oil when you tear into the engine to fix if you have to. Good luck, it may go away. ....

[Napalm]

Yeah I had 3 people recommend lucus oil stuff to smooth it out and clean it out. I said smurf it yesterday and bought a bottle. It was about a quart low - which is about normal for what I get out of the catch can over the course of _____ miles. I'd already done my swap the filter thing back in january - OLM says 38% and I was about to swap out the mess anyway. it's about that 8-9 month time.

so meh.

Check my spark plugs to make sure they were tight - because when I listen to other people's noises this is louder and oddly sounds just like a loose spark plug in the cabin - but outside it's louder and sounds like head noise. eliminate a simple thing right. Also check engine light pops on and off occasionally.


I don't know - I either put money in her to rebuild it - thinking cam, new heads with whatever, might as well pop the pistons out and re-ring them right - new chain the like.

DOD delete too.


BUT - I also think I want a transit wagon (the ford thing -yes I know). Or an SS, or an F150 ecoboost, or __________. hell I even looked at a CPO tesla.

I need to replace the clockspring on the car - yep airbags light. and it needs a few widow seals - Even though I treat them 2 are dryied out now.

trans has lots of miles though it - as does the diff. It's a mess and I'm a nervous wreck.

[AVIDMOTION]

Run a scan on the memory for the codes for the on n off again SES light.

[Napalm]

thank you - trying to but I don't have a scanner right now. waiting to borrow an innova setup right now.

I don't know what codes I want to see. I mean would a lifter issue cause a misfire - I'd think so.

[texn884]

Man that sucks for sure my first engine lasted 98,200 miles under warranty, GM can fuck up a wet dream on anything, bastards

[Napalm]

I'm going to make a new thread as I will need some help picking and deciding. Thanks guys.

[hflores3]

The G8GT because of it's 9qt oil pan is already a 10,000 mile oil change interval capable car.

Respectfully,

a) "any oil" can go to 10,000 mile interval. The core question is the level of protection you want for your engine at that interval.
c) a 9 quart sump is not a significant determinant of the level of protection you want for your engine.
d) The level of protection comes from the quality of the base oil and the additive packs therein. (dispersents, detergents, antioxidants, friction modifiers, anti shearing, etc.)
e) At some point all additive packs will diminish (via volatility, oxidation, mechanical shearing, combustion contaminants, etc.) .... that's when you see gunk, soot, and all that stuff!)
f) You are correct that you can take our 9 quart cars to a 10,000 oil change interval - but we would do so at a cost/benefit compromise. (i.e., the reduced cost of oil changes vs. the high cost of a reduced mileage engine and subsequent R&R. The dealer replacement cost of an L76 (with labor) is $9,000. Not suggesting that 10k oil intervals lead to engine replacment (cause & effect) ..... only that we have a lot of cash invested in our cars and thus the need protect drive trains with quality lubricants.

[buzzard302]

Bringing this one back up for an unscientific comment. I recently bought my 09 G8 GT with 49k miles on it. When I went to look at the car, I was floored by how quiet and smooth the engine was idling. I could barely hear it running when walking around the vehicle. The previous owner religiously used Penzoil Ultra Platinum. For the past 10 years, I had a GTO and used Mobil 1. That engine always had a slight sewing machine/ticking sound, even when new. Obviously I am comparing two separate engines here, but I am currently very sold on the Penzoil and plan on using it going forward with the G8.

[Chewy]

Bringing this one back up for an unscientific comment. I recently bought my 09 G8 GT with 49k miles on it. When I went to look at the car, I was floored by how quiet and smooth the engine was idling. I could barely hear it running when walking around the vehicle. The previous owner religiously used Penzoil Ultra Platinum. For the past 10 years, I had a GTO and used Mobil 1. That engine always had a slight sewing machine/ticking sound, even when new. Obviously I am comparing two separate engines here, but I am currently very sold on the Penzoil and plan on using it going forward with the G8.

Remove the foam rubber piece and faux cover from the intake plenum and it'll make a bit more noise. My stock GT ticked. Mostly injector noise though.