Hello Cougared,
I didn't realize that people on this board have been doing used oil analysis since the 50's. Heck, I didn't even buy my first car until 1972! Anyways, I just checked and it looks like I first started doing used oil analysis in 02/2005. I have owned and done engine oil used oil analysis on four vehicles since then. Here is how I would rate those engines based on being able to control wear with used oil analysis and corrective action:
1. (tie) Toyota 2UZ-FE V-8. The first couple of reports were a little off from the normal, but changing fuel brand helped the most with Pb wear. You can get this engine to go very low on wear pattern. If you are looking for sewing machine precision, this is the best I can offer that I've owned. It doesn't consume any oil.
1. (tie) Honda F22C1 I4 VTEC. This little bugger is NA and gets 120HP/L and has one of the highest piston speeds of any production engine in the world. Outside of the OEM fill, I have never seen high wear rates on any UOA for this engine, regardless of oil brand or weight. I hesitate to put it into the sewing machine category, because you just don't drive an S2000 like you would operate a sewing machine. It doesn't consume any oil.
2. Toyota 2GR-FE V-6. Performance wise, this is an excellent engine. But I'd rather have it in a RWD vehicle. IMO it's too much for a FWD vehicle. My initial UOA at 10K shows some normal break-in wear, but is missing some ring wear. I am trying to correct that now. I expect this engine to show very low wear once I give it some final touches in the lube department. It doesn't consume any oil.
3. Infinity/Nissan VQ35DE V-6. This engine is a wonderful performer (torquey), but mine was shedding lots of lead (Pb) when I first started testing and got worse around 60K. I was able to cut it in half by changing oil and fuel brands, but I honestly don't know if it ever would have been a "low wear control" engine. I traded it when it had about 86K. It consumed about 1/2 qt in 5K miles near the end.
Well, that's all I have to offer related to the question.
Jack
Originally Posted By: CougarRed
For those experienced BITOGers who pay attention to used oil analysis, which engines tend to show the lowest wear after break in?? In other words, "run like a sewing machine"?
For example, I've seen many excellent used oil analysis on Toyota's 4.7L V8 found in various Lexus (GX470, LX470) and Toyota (4Runner, Tundra, Land Cruiser, Sequoia) models.
In particular, which engines have demonstrated excellent engine wear from the following makers:
Toyota
Honda
Nissan
Mazda
Subaru
BMW
Mercedes
Audi
VW
Thanks!