Here us a picture of my A4 top end while replacing the oil separator. Almost 80k miles. 10k oci with Ravenol RUP 5w-40
Engine Cleanliness
- Thread starter Gene K
- Start date
That is how a properly maintained engine should look! Look at the lube getting into the cam chain rollers.
So, Valvoline came up with the Premium Blue Restore to clean up those Cummins, then came up with the Premium Blue Sludge & Varnish? https://www.fuelsandlubes.com/valvoline-launches-premium-blue-solution-gen2-heavy-duty-engine-oil/
To finally balance component life or affection of different areas within engines? Do we really need to look at foundations that way? Looking at pics? And crystals?
To finally balance component life or affection of different areas within engines? Do we really need to look at foundations that way? Looking at pics? And crystals?
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I think overhead cam configurations allow vapors to rise to those areas when the engine is shut down and deposit as they condense. I don’t think it is a great indicator of engine cleanliness Due to the accumulation of lighter fuel and lubricant factions That occurs.
FWIW while varnish causes a lot of bed wetting on BITOG, I've taken apart a fair number of engines that looked like absolute crap inside but wound up in the junkyard because the car was wrecked or the transmission failed.
FWIW and it isn't much the engines you are talking about had not much in common with modern engines other than it had pistons that went up and down, a camshaft and an average lifespan of 100K and a 10 year or less lifespan of the body on cars generally after 1960.
Smoking out of the tail pipe like my mothers frying pan and lifters sticking was the norm as was needing a ridge cutter to get the pistons out.
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Good pictures … What they look like when not wiped down …
IMO a number of posts are wiped down regardless of what the poster says …
More value to me in seeing the lube is reaching moving parts …
Solvency is what gives you cleaning power. Solvency tends to decrease as you go up in oil base group. PAO synthetics have very poor solvency which is why ester or naphthalene is typically added to them or they keep the concentration of PAO below 50% using the rest as group III.
Oxidation is what causes varnish and sludge to form. Higher oil base groups are more resistant to oxidation.
In a sense of oxidation causing a dirty engine, yes synthetics will keep the engine cleaner as they are more resistant to oxidation. In the sense of cleaning an already dirty engine however, that is not the case as the lower solvency of synthetic oils reduces cleaning power. The exception is synthetic oils will a good bit of group V.
Oxidation is what causes varnish and sludge to form. Higher oil base groups are more resistant to oxidation.
In a sense of oxidation causing a dirty engine, yes synthetics will keep the engine cleaner as they are more resistant to oxidation. In the sense of cleaning an already dirty engine however, that is not the case as the lower solvency of synthetic oils reduces cleaning power. The exception is synthetic oils will a good bit of group V.
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It seems cheaper and more effective to clean a dirty engine with BG etc (follow instructions) and then give it a decent synthetic going forward …
Had to update the cam chain tensioners on this Jag V8, nothing noteworthy other than a clean engine. No idea what was in it but original spec was 5W30 dino and it got Edge 0W40 a couple thousand miles before this job.
First thought has to do with the quality of Royal Purple lol.
Thats a sweetheart overbuilt 4 cylinder engine. looks nice. I had one in a 2001 but didn’t keep it long it was in a regular cab 4x4 with a bench seat And didn’t fit for long term.
Our 2000 C230 Kompressor with 89,000 miles has had yearly changes with Mobil 1 0W-40 Euro, Looks as good as this BMW M5 - Good stuff.
That is one Benz I would buy. That is the small sportback hatchback wagon-ish one, is it not?
With the Supercharged 2.3 ?
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I'll have to say, that engine looks awful. Varnish everywhere and looks to be heavy wear on the camshaft lobes.
No, this is the 4 dr. sedan, C Class, C230 from 1994-2000 - I know the one you are talking about, tho! I have been seeing one at my work day morning coffee spot lately, a black one. I had forgotten about those! This is ours...
I run typical Group III synthetics (M1 , PPPP , Valvoline Advance , etc.) 5W30 and every few OCI's I pour in a 16 oz. bottle of Rison engine cleaner (before that I would use Sea Foam @ 1 oz. per quart of oil) . Both seemed to provide a bit of cleaning but nothing too dramatic as I was already doing severe duty oil changes with the Group III SN+ D1 / Gen 2 synthetics .
Probably didn't matter if they were like my Mom.
Quaker State Blend 5W-30 - Changed every 6 months and after 36 months she had 11,000 mi.
Even the infamous Hyundai 2.4 GDI looked good.