05-21-2019, 10:02 AM | #1 |
First Lieutenant
154
Rep 387
Posts |
GDI Oil?
I recently saw a video on Engineering Explained, discussing oils with GDI specific engines in mind. Basically, these have detergents and additives that help reduce carbon buildup on the intake valves. I emailed Liqui-Moly, as I've started using their Molygen oil so as to ask if they have anything like this in their line-up. The reply I received was, "this is not possibe."
So is this actually a thing, or hocus pocus? |
05-21-2019, 11:23 AM | #2 |
Lieutenant General
8170
Rep 15,962
Posts |
LiquiMoly is probably correct. No doubt additives/detergents reduce carbon build up compared to oils that don't have them, but I doubt there is a synthetic automotive oil that doesn't. You can still find non-detergent mineral oils, but not rated for automotive use. I've got a quart of that in my garage right now, my chainsaw bar and chain oil.
|
Appreciate
0
|
05-21-2019, 12:25 PM | #3 | |
First Lieutenant
154
Rep 387
Posts |
Quote:
I have a catch can in the mail. Hopefully between that and an annual decarb with the CRC product, I will never have to resort to a Walnut blasting. |
|
Appreciate
0
|
05-21-2019, 12:59 PM | #4 |
Lieutenant General
8170
Rep 15,962
Posts |
On that, no doubt the catch can is worth it. When I pulled my PCV hose to install the can the hose was practically dripping with oil. That can't be good.
|
Appreciate
0
|
05-21-2019, 04:05 PM | #5 |
First Lieutenant
154
Rep 387
Posts |
|
Appreciate
0
|
05-21-2019, 07:23 PM | #6 | |
Lieutenant General
3540
Rep 10,327
Posts |
Quote:
An example of such oils would have one or more of the following OEM Certs, LL04, 229.51, 504/507 |
|
Appreciate
0
|
05-21-2019, 07:32 PM | #7 | |
Lieutenant General
3540
Rep 10,327
Posts |
Quote:
|
|
Appreciate
0
|
05-27-2019, 09:12 PM | #8 | |
Lieutenant
212
Rep 500
Posts |
Quote:
|
|
Appreciate
0
|
05-27-2019, 09:51 PM | #9 |
First Lieutenant
154
Rep 387
Posts |
I actually pulled the vacuum hose off of the brake booster and sprayed it through there. Just be careful if you go that route as it’s a more direct shot into the intake manifold. Not that you would necessarily risk hydrolocking the engine, but why take he chance? Two to three second bursts. Next time I will shoot some through the intake as well to get any potential blow-by oil from the PCV system off of the turbo compressor/impeller blades.
You could remove the the air box, stick the straw/tube from the GDI cleaner in past the MAF, and you’ll be fine. Last edited by IraHayes; 05-28-2019 at 07:00 AM.. |
Appreciate
0
|
05-28-2019, 07:59 AM | #10 |
Lieutenant General
8170
Rep 15,962
Posts |
That's the usual method. While you've got the MAF sensor off clean it too. No matter what you do some codes will probably be thrown, mostly misfires, so it's best to have an OBD diagnostic tool capable of clearing them. If you're doing your own work you should own one anyway.
|
Appreciate
0
|
06-02-2019, 06:27 PM | #12 |
Lieutenant General
3540
Rep 10,327
Posts |
You do not want chunks getting baked onto your catalytic converter. Carbon cleaning for the N55 and newer is approx 100k miles. Besides there's no reason to believe that spraying cleaner will become evenly distributed to all cylinders anyways.
|
Appreciate
0
|
06-02-2019, 09:08 PM | #13 |
Lieutenant
212
Rep 500
Posts |
I believe it's best to do cleaning of intake valve more frequently to reduce the risk of having the bigger carbon chunks break off from the intake valve. I just done the cleaning last week and all is good. The engine does feel slightly more responsive. My next step is to install oil catch can.
|
Appreciate
0
|
06-02-2019, 11:44 PM | #14 | |
Lieutenant General
3540
Rep 10,327
Posts |
Quote:
It's seriously not a good idea to use these spray cleaners on gas engines. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|