Should I push HPL longer than 4K OCIs with track use?

3.5K miles so far this year on this oil and 3x hard track days. Oil was in the 270F + range for ~5 hours during that event last weekend. No more track until fall it's looking like so may pull sample once I hit 5K miles. I've added ~1/2 a qt so far.



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Our esteemed moderator, @wwillson, has suggested longer OCIs for my Sportwagen on the HPL Euro 5W40. Thinking on it, ~4K OCIs are only being driven my track time, not miles. For example, my last OCI was ~4.1K including 5 track days...the UOA is forthcoming but I can't see why it will look any different than my other HPL UOAs....100 deg C viscosity at ~12cST and normal analyte/wear metal values, likely a bit of fuel but nothing egregious from what I have seen. Should have those results back in a few weeks. If they look fine, I think I may push this next one out a bit longer. Forecasting my 2024 HPDE schedule, I'm looking at ~11 total track days/~6 events over the course of the year. Oil temps on my car push upwards of 280 during these events. 11 track days equates to roughly 15 hours on track. My daily driving at this point is about 10K/year but can fluctuate. My consumable costs are not insignificant; based on my track events to-date, I am at $288/day in consumables (primarily tires/brake pads) but oil can be factored in too; this number is over-estimated b/c I've done quite a bit of experimenting with brake pads etc. so I expect that number to fall steadily over this year's events as I've landed on tires/brake pads that I like/last a reasonable time. This cost doesn't include fuel but I can't change that cost. Brake fluid is free from FCP Euro. So anything I can to do to intelligently reduce consumable costs is a good thing. One HPL oil change is $100 for me, filter is free from FCP Euro. So drop $200 off my 2024 costs at ~3 changes currently.

Can HPL Euro 5W40 be used for 15 hours of track conditions/high oil temps? So 1 year/~10K OCI?

Edit. I can just pull oil samples during the year...duh.


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It's definitely gonna perform better than Liquimoly. I think the Euro or No VII oil is gonna give you good results.
 
Ok mid-year/OCI sample collected. Not quite 4K mi...probably a 7-8K year total this year as I split daily duties with my W8 Passat wagon. 3x track days on this...sustained 270-280 oil temps for ~3 hours. Have 5 more track days in H2. Will see how this looks. Did add ~1/2 qt fresh so far...I don't typically see much if any consumption.

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It's definitely gonna perform better than Liquimoly. I think the Euro or No VII oil is gonna give you good results.
Was hoping to see this


Ok mid-year/OCI sample collected. Not quite 4K mi...probably a 7-8K year total this year as I split daily duties with my W8 Passat wagon. 3x track days on this...sustained 270-280 oil temps for ~3 hours. Have 5 more track days in H2. Will see how this looks. Did add ~1/2 qt fresh so far...I don't typically see much if any consumption.

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Let us know how the results look

I'm looking to get Amsoil FS 5w40 Euro or HPL Euro 5w40 for my 700hp X7 M50i (V8 TT) and my 900hp G80 M3 (inline-6) running 1050cc port-injection with 90% of the time E70-E85%
 
Ok ladies and gents, here you go, took a month but whatever. Looks great for ~6 mos/4K and 3 track days where the oil temp was sitting around 270 deg F the entire weekend (I estimate about 3 hours of actual driving). 10/10 recommend. Will keep it in and push the whole year on it so 5 more track days and probably 4-5K more miles. 13.11 cSt is fantastic (assuming that is right). Metals dropped which is great, I did swap out intake pieces in an attempt to fix a possible leak/dust in my intake tube shown by a spike in wear metals last change (assuming/made the most sense as to why). Note I did add a ~1/2 qt so a small % of more fresh oil here.

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How much oil capacity does it have?
Would be appropriate to factor that .5qt fresh oil top up into the wear rate...
 
In your case, yes.
In my case ‘no way, I have too many ocd issues.
Everyone has to find their comfort zone. I know plenty of folks that change it each track day/event which is completely overkill to me but hey, their car so they can do it after each session for all I care. I have tried to provide real-world data to help folk make these choices.
 
Ok ladies and gents, here you go, took a month but whatever. Looks great for ~6 mos/4K and 3 track days where the oil temp was sitting around 270 deg F the entire weekend (I estimate about 3 hours of actual driving). 10/10 recommend. Will keep it in and push the whole year on it so 5 more track days and probably 4-5K more miles. 13.11 cSt is fantastic (assuming that is right). Metals dropped which is great, I did swap out intake pieces in an attempt to fix a possible leak/dust in my intake tube shown by a spike in wear metals last change (assuming/made the most sense as to why). Note I did add a ~1/2 qt so a small % of more fresh oil here.

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LM seems to work best in your car with the least amount of wear metals.
Why not just stick with that?
 
LM seems to work best in your car with the least amount of wear metals.
Why not just stick with that?
It looses it's viscosity is the main reason - look at the last run....6 mos/4K miles/3x hard track days, still in grade, only oil change I've had that did that! I had the lowest ending viscosity in my dataset with the Molygen. I would need to change the LM after every event (even though it is "free" using FCP Euro). Finally, on the wear metals - the reason I am seeing higher wear metals (hypothesis of course) is simply that 1) it's being used more on track than during my use-period for the Molygen and being pushed much harder than it ever was with the LM 2) I have had mechanical issues (timing chain tensioner is one that increased wear metals) and a leaky intake which also appears to have increased wear metals during the HPL use portion of the dataset which woudl have impacted any other oil in the same manner. Of course I'd have to now go back to the LM Molygen for several runs to gather data on that to have the data to be able to say anything.
 
If cost were the driving factor: Frequently changing the oil for the cost of return shipping from FCP Euro, and saving money on UOAs to spend towards entry fees.

I suspect this is the hobby inside the hobby, so UOAs and experimenting is part of your fun. So UOA is worth it.
 
If cost were the driving factor: Frequently changing the oil for the cost of return shipping from FCP Euro, and saving money on UOAs to spend towards entry fees.

I suspect this is the hobby inside the hobby, so UOAs and experimenting is part of your fun. So UOA is worth it.
100% would be cheaper.
 
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