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Good points above. Good timing too. Got my latest UOA back from Blackstone. My indy switched from Total Quartz 9000 to Liquimoly Leichtlauf High Tec for the last change so this is mostly that with whatever Total was left over from the drain. Both my last 2 changes had a quart of Ceratec added and both had about 2 quarts of the same oil added during the 5k OCI. Curiously this UOA shows a lower viscosity, but the same fuel dilution which is low. I am also noticing a much higher oil consumption after 3000 miles so I may adjust my OCI accordingly.
How does FR50 differ from DT50 other than the 5W vs 15W cold temp viscosity? When you check the Driven website it says the FR50 is for the Ford Coyote engine and DT50 is for air cooled Porsche engines. I know it's their trade secret but I wish Driven gave a little more technical information rather than making it proprietary by tying some oils to a specific engine(s).
I don't know much at all about Ford motors but it appears to be a modern engine that utilizes a technology similar to SUMEBore (wire based instead of plasma based): https://performanceparts.ford.com/part/M-6007-M50C
There is no functional difference in the additive levels between DT40, DT50, and FR50. You could even run DT50 if you wanted as long as it doesn't get cold where you are at.
Thanks for the information. Ya, their oils are outstanding and I have seen excellent results using them. I 100% agree with your comments above about avoiding low zinc and phosphorous oils. Charles has an excellent short writeup about this on his LN website (titled something like "what's the best oil for my Porsche or any high performance engine"). Following European ACEA oil specs, which is effectively what we are doing, is much better than the crap API guidance if you want to protect your engine........
Good points above. Good timing too. Got my latest UOA back from Blackstone. My indy switched from Total Quartz 9000 to Liquimoly Leichtlauf High Tec for the last change so this is mostly that with whatever Total was left over from the drain. Both my last 2 changes had a quart of Ceratec added and both had about 2 quarts of the same oil added during the 5k OCI. Curiously this UOA shows a lower viscosity, but the same fuel dilution which is low. I am also noticing a much higher oil consumption after 3000 miles so I may adjust my OCI accordingly.
That oil is shearing. Did the oil consumption increase when you switched oils? When changing oils you may notice a change in consumption that can even last for as much as a few OCIs as the new oil with its additive package takes over. My personal experience is that when I switched from OE oil (didn't want to risk my warranty while under CPO) to Driven DI40 I noticed an uptick in my oil consumption that caught my attention but it stabilized and then after 2-3 OCIs dropped to near zero.
Good points above. Good timing too. Got my latest UOA back from Blackstone. My indy switched from Total Quartz 9000 to Liquimoly Leichtlauf High Tec for the last change so this is mostly that with whatever Total was left over from the drain. Both my last 2 changes had a quart of Ceratec added and both had about 2 quarts of the same oil added during the 5k OCI. Curiously this UOA shows a lower viscosity, but the same fuel dilution which is low. I am also noticing a much higher oil consumption after 3000 miles so I may adjust my OCI accordingly.
Just a request for a clarification on above statement: are you adding a quart of Ceratec per 8 quart oil change? I think the recommended amount per LM is 300ml per 5 quarts of oil or 450 ml for 7.5 quarts. A quart is 946 ml. If so, that might explain some of your viscosity drop. Here is a VOA for Ceratec (compliments of Charles Navarro/Engineering and Lake Speed/ SpeeDiagnostix):
Sorry, my bad. One can per oil change. So 300ml per 8 quarts which is actually less than the recommended amount, but I'm not going to worry about it that much since you have leftover oil that you cannot drain out in there anyway. It still does the job. I'm sinning a bit on the oil anyway because I went from Mobil 1 for 2 changes to Total for 2 changes and now Liquimoly (on my second change with it). My indy says he normally uses Liquimoly but had a supply issue so had to go with Total for a while. I am going to try to stick with Liquimoly for now. If I notice another change in consumption at 3k, I may try DI40.
First one of 2022. This was the first oil change under my ownership. Last change was done May 2021, right before I acquired it in July. That change was LiquidMoly 5W-40. PO also stated he used Ceratech on either that change or the one previous. I used 5W-40 Driven DT-40. Looks like fuel dilution could be a concern. Maybe time for new injectors. Thoughts from the experts?
Last edited by TerrestrialFlyte; 01-31-2022 at 11:09 PM.
No expert here, just cheap. Fuel dilution can also be from an off tank of gas or a spark plug going. Maybe try another test duration (gas) to see if the dilution changes and do the plugs before coils ($). BTW, yellow is a great P car color! Either way good luck.
After doing the oil change the wife said she was feeling romantic. So as the good husband I had her screaming for two hours. I wiped my hands on the curtains....crude oil joke amiright?
After doing the oil change the wife said she was feeling romantic. So as the good husband I had her screaming for two hours. I wiped my hands on the curtains....crude oil joke amiright?
Looks good. And don't worry about the fuel dilution. I'd consider that normal for the DFI engine.
First one of 2022. This was the first oil change under my ownership. Last change was done May 2021, right before I acquired it in July. That change was LiquidMoly 5W-40. PO also stated he used Ceratech on either that change or the one previous. I used 5W-40 Driven DT-40. Looks like fuel dilution could be a concern. Maybe time for new injectors. Thoughts from the experts?
Before you go too deep here, I'd first verify fuel trims. If they look ok, then resample next oil change. If the fuel trims are off, I'd first start with smoke testing the engine and go from there.
DFI engines can easily run upwards of 2% fuel dilution (or even more in some circumstances) and still be operating normally. This is especially true if you do a lot of short trips, etc.
Bad injectors can kill a port injected engine but it’s especially a concern on more modern DFI engines which have a more complex fuel delivery system. For this reason I replaced my HPFP preemptively at 100k miles a couple week ago (nothing wrong with it) and if I ever suspect a problem with any of my injectors I will pull all of them immediately and replace with new OE and call it a day.
Before you go too deep here, I'd first verify fuel trims. If they look ok, then resample next oil change. If the fuel trims are off, I'd first start with smoke testing the engine and go from there.
12-29-2021, 06:29 PM
