2005HHRauto

This is the best oil ever made for our HHR SS DI engine.
& for every other DI engine...
http://www.pennzoil.com/en_us/produc..._Motor_Oil.pdf

https://www.walmart.com/ip/Pennzoil-...2222#read-more

Don't be confused when you read that it is for diesel engines also...

Pennzoil Platinum-Euro L 5W-30
Must be Euro L.

At Walmart for $20 a 5qt jug.
Pennzoil online rebate $10 on a 5qt jug.
So, the best oil ever made for DI engines is only $10 for a 5 qt jug.



This is the oil you want to help prevent DI 'coking' of the intake valves...
Understanding intake valve coking in DI engines - ModernCamaro.com - 5th Generation Camaro Enthusiasts

The Problem with Direct Injection ? Coked Up Valves

This oil also helps with the DI 'super-knock' issues...
SAGE Journals: Your gateway to world-class journal research

Knocking combustion in spark-ignition engines - ScienceDirect

http://www.laurent-duval.eu/Articles...e_ihcsieva.pdf

https://www.researchgate.net/figure/...ctrode-breakup

Oldblue

A lot of great information to back up the claim. Awesome.

RJ_RS_SS_350

Yeah, thanks Dave. I subscribed so that I can check all this out when I have time!

Cat Man HHR

Maybe I'm missing something. Where in any of the articles does it say this oil is the best? We all know of the choking problem. How to use a spray or R&I the intake to clean the back side of the valves.
The $2 rebate doesn't list this oil either.
http://www.pennzoil.com/en_us/promot...Rpb25hbDE3Lw==
Just my 2 cents.

2005HHRauto

Because turbocharger...

The most current dexos1™ specification (dexos1™ Gen 2) was released in 2015 to provide even higher engine performance and protection, particularly low speed pre-ignition (LSPI) protection in small displacement turbo-charged engines.

Meets dextros 2..
dexos®

Low ash, low sulphur, low phosphorus oil = less 'coking' of DI intake valves...

If anyone knows of a better oil for DI engines w/ turbo, let us know...

Euro L is a Pennzoil Platinum full synthetic oil.
I have sent in several online rebates, but haven't received any checks yet.
I don't see this as being an issue.
This oil was $50 for a 5 qt jug just a few months ago.
This oil is a steal at $20.
I have 10 jugs on the shelf in my garage...

donbrew

Uhhhh, It's right on your oil filler cap "use only Mobil1". Or, does it say "use Mobil1"?

2005HHRauto

Back in the day when GM didn't realize about future longterm 'coking' problems
with the intake valves, & didn't know what 'LSPI' was all about.

LSPI, 'super-knock', is real, & is destroying DI/turbo engines...

I remember when 'bacon', & 'lard' were good for you...

Some guys still don't believe in full synthetic oil, or AGM batteries...

I have always used Pennzoil Platinum & Pennzoil Ultra Platinum oil in my buggy since it was new...
I've never had to add oil between oil changes, & I can run 12.3s at the track all day, & I drive it year round, even in Pittsburgh winters...
I have also used a 50/50 mix of E85 & gasoline in my buggy since new, (good for 30 horsepower alone)...
36K miles on it now, & I still drive it like I stole-it...

whopper

Not a believer in synthetic oil here - I've been through the frustration of switching to synthetic in my 2006/2.4l after driving it for a couple of years, and found it DRANK synthetic like it was going out of style. Switched back to conventional after it used over a litre in less than 3000km if I remember right - and it took a couple of changes for the oil consumption to return to normal - ie: 1/4 litre, if that, between 7000/8000 km oil changes.

Also tried synthetic in my Goldwing - highly recommended to get rid of the clunks in the transmission gear changes - that too did not help at all. Back to conventional oil in it ever since.


So if you believe in Synthetic only - good for you - but it ain't no miracle - it won't get rid of warts.

aradmahogany

Gregg, though he is an lt, has been running just fine on all different kinds of full synthetic oil. And if his big brothers (spoiler!) 6.2 liter supercharged direct injection engine runs fine on the same oil I think the lnf is fine. From mobil 1 to pennzoil ultra platinum they generally are all the same. The harder you drive the more often you need to change. Changing at the correct intervals is critical for the health of charge systems and vvt.

Cat Man HHR

I know this from Amsoil but it explains LSPI :
Protect your turbo engine from LSPI (Super Knock)
Here's something if you want to explore more about it:
https://www.bobistheoilguy.com/forum...micals_on_LSPI