The problems with GDI

[buster]

gotcha. i just see people mentioning it everywhere like it's some miracle oil. does it clean better than HPL? has anyone tested them side by side?

I hear you, it's the flavor of the month. I think the cleaning comparisons they are making are the off the shelf oils. HPL can clean very well.

 

[buster]

I think the ad on T.V. for VALVOLINE Restore and Protect claims pistons / rings and no mention of valves . PENNZOIL Ultra Platinum ( S.P.,GF-6A ) should clean just as well as the R&S . P.U.P. also has G.M Dexos1 Certification for 0w-20 , 5w-20 and 5w-30 at their site under Industry Specifications and O.E.M. Specifications ( v BELOW v ) .

Pennzoil Ultra Platinum™

Pennzoil Ultra Platinum™ Full Synthetic motor oil keeps pistons up to 65% cleaner and delivers complete protection in 0W-20, 0W-40, 5W-20, 5W-30, 10W-30 viscosities.

www.pennzoil.com

Here are the VISCOSITY Details : Technical Data Sheets ( 0w-20 , 0w-40 , 5w-20 , 5w-30 , 10w-30 )

Pennzoil Ultra Platinum™

Pennzoil Ultra Platinum™ Full Synthetic motor oil keeps pistons up to 65% cleaner and delivers complete protection in 0W-20, 0W-40, 5W-20, 5W-30, 10W-30 viscosities.

www.pennzoil.com

PUP will run clean but can't clean piston deposits like R&P.

 

[cryptolyme]

PUP will run clean but can't clean piston deposits like R&P.

i wonder if it just has a higher percentage of esters for cleaning

 

[burbguy82]

PUP will run clean but can't clean piston deposits like R&P.

What is R&P?

 

[Patman]

What is R&P?

Valvoline Restore & Protect

 

[thastinger]

I have a 24’ ru that’s gdi

I’ve put 15k+ miles on it in 5 months. It sees a lot of highway use.

What else can I do to minimize carbon buildup?

Put some catch cans in line between the PCVs and the manifold.

 

[odie]

R&S and P.U.P. 0w-20 for comparison . P.U.P. 0w-20 V.O.A. from 4/21/24 . These are from YouTube videos . Both look to benefit G.D.I. and D.I..

P.U.P 0w-20

 

[picklyrickly1073]

Put some catch cans in line between the PCVs and the manifold.

One of the first things I did, sure it won’t catch everything but it’s definitely better than nothing.

 

[Urshurak776]

Wow, going by the VOA of the Restore and Protect, the 5W-20 seems more robust then the 0W-20. Magnesium, Zinc and Moly specifically.

Still not sure what's in it to allow the restore part to work. I believe the protect part.

 

[burbguy82]

Put some catch cans in line between the PCVs and the manifold.

I did on mine, hooked up both side to it. Filled it up in about 10000. A mishimoto unit. Gm says that they "fixed this issue with the L8T, which is another lie.

 

[Triple_Se7en]

Wow, going by the VOA of the Restore and Protect, the 5W-20 seems more robust then the 0W-20. Magnesium, Zinc and Moly specifically.

The base oil of the 0w20 beats the 5w20. It's usually universal across the industry. That's why you saw an uptick in the additives of the 5w20.