I bought my 15 Tacoma 4.0L in 16 with 30K miles. Since then I’ve used Amsoil SS for a few 10K intervals and mostly XL for 6000-7500. Granted it has 125K.
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Well I'd like to have seen a little improvement. I understand it wasn't gonna be a magic bullet but TBH I shouldn't worry about the aesthetics of it.If your happy? I'm happy I don't see any difference. What does it look like in the oil filter?
My other Tib, V6, was at 180k and looked brand new under there. No hard yellowing or nothing. And that too suffered from oil burning but eventually was healed.For it to have that much varnish and some sludge build-up now, it's obvious that the oil and oil changes were not on the right track for the first 160K miles. I've seen engines with 180K miles on them that look like new inside from good oil and OCI maintenance.
You used the product incorectly.Well I'd like to have seen a little improvement.
How soYou used the product incorectly.
I said last month that I'd return and share the before/after.What are your expectations from this thread?
I'd ensure the PCV system is working 100%, and replace the PCV valve if you haven't already done it recently.I know engine blowby isn't ideal for obvious reasons, but I assume that all cars that burn oil have some sort of blowby? And as stated it only burns a quart every thousand to 1500 miles. Which isn't quite considered "excessive" depending on who you ask.
I hear ya. IMO in a case like yours, cleaning if any, gets varnish redeposited due to the blow-by, since this is a very slow cleaning process. I'd be willing to bet a flush, which FTR I'm not a fan of, would probably work well in your case since there's a good chance the HPL might have actually softened things up. The area you wiped is what has me thinking that way. In a case like yours I might be inclined to give a flush a shot.Well I'd like to have seen a little improvement. I understand it wasn't gonna be a magic bullet but TBH I shouldn't worry about the aesthetics of it.
@demarpaint @xgmad I know engine blowby isn't ideal for obvious reasons, but I assume that all cars that burn oil have some sort of blowby? And as stated it only burns a quart every thousand to 1500 miles. Which isn't quite considered "excessive" depending on who you ask.
My thoughts exactly...I'd ensure the PCV system is working 100%, and replace the PCV valve if you haven't already done it recently.
And he only used 3/5 of a quart initially. Then added the rest later.
So, yeah, used HPL, but not much and not for very long, on a really varnished engine.
I wouldn’t expect much, either.
Exactly, as Astro14 stated, he used a partial quart of the HPL cleaner and the rest later in an oil burner. The HPL cleaner is LESS aggressive than their oil. So gradually adding small amounts is not going to do much.It's possible there's just too much insoluble varnish deposit to effectively remove it. It could also need a more aggressive approach. The HPL PCMO and HDMO oils clean more aggressively than the HPL EC. The EC is designed as a transition, to remove loose sludge and carbonous deposits slowly before switching to the more aggressive PCMO or HDMO. If it was me, I would replace a whole quart with the EC and run to 230,000 miles. Then switch to the PCMO.
Was replaced recently with OEM. Tested it at 224kI'd ensure the PCV system is working 100%, and replace the PCV valve if you haven't already done it recently.
If it's less aggressive then why does the HPL EC instructions tell the user to use a 1:5 ratio?Exactly, as Astro14 stated, he used a partial quart of the HPL cleaner and the rest later in an oil burner. The HPL cleaner is LESS aggressive than their oil. So gradually adding small amounts is not going to do much.
Already use 10w40.Throw some 10w-40 or 15w-40 High Mileage to help with burn off & keep on truckin'.
Because they don't want their much more aggressively cleaning engine oils to plug filters. The idea is to start out cleaning slowly.If it's less aggressive then why does the HPL EC instructions tell the user to use a 1:5 ratio?
Because its designed as a gentle light cleaner before using their ester oils. PM them, HPL will tell you the same.If it's less aggressive then why does the HPL EC instructions tell the user to use a 1:5 ratio?
Yeah I think I'm just going to leave it. It is mostly superficial. I may, one day, try the Berryman B12 treatment down the spark plug holes since I have a can or two in the garage somewhere for the rings.I wouldn't worry about the varnish. Does if look pretty? No. But if the car otherwise runs fine, and by that I mean that as long as the oil consumption is at a reasonable level for you to stay on top of and the engine otherwise runs ok, then I wouldn't sweat it.
Maybe a bad PCV valve ?7 years of ownership and 3k oil intervals....and THAT much varnish? Wow. I guess that blows away a few theories.
That looks brand newI bought my 15 Tacoma 4.0L in 16 with 30K miles. Since then I’ve used Amsoil SS for a few 10K intervals and mostly XL for 6000-7500. Granted it has 125K.
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Already replaced and even more recently tested.Maybe a bad PCV valve ?