Answers: The fact that you haven't changed the grease in 4,000 miles doesn't hold any effect on smells of any kind coming from the engine compartment. Certainly, you want to bring an oil cash as soon as possible.
If the smoke is from the engine compartment, look for a valve cover bleed and get it fixed. If it is from the exhaust pipe, hold a mechanic do a leak-down test to see if you enjoy a blown head gasket. Although explicitly more unlikely especially since you mentioned that there is NO observation issues.
Although you didn't mention the total mileage of your car, you should metamorphose the oil regularly, every 3 to 4 thousand miles is a righteous measure.
Excellent vehicle, take aid of it and it will last a long time.
Of course any smell and smoke coming from the engine is a mete out for concern. The fact that you are placing this much attention into your car shows that it's probably within pretty good shape.
Is the smoke coming from the exhaust? from below the hood?
If its exhaust. You could have one of several problems brewing.
The piston rings are wearing and grease is getting into the cylinders from the crankcase.
Your valve guides are wearing, your spout seats are wearing.
If it's in recent times a tiny amount of smoke, don't worry nearly it. Change your oil every 3K miles and use a slightly heavier viscosity, i.e. 40wt instead of 30wt.
Either it's burning grease or someone spilled oil somewhere and it's in recent times burning on the outside of the engine which isn't really a big deal. But don't linger until you DO have recitation issues to have it inspected.
4000 isn't that doomed to failure, not enough to motive any engine damage. If your engine is smoking out the tailpipe, you may hold a leaky headgasket. '96-03' 2.5's had a huge ruin rate, the gaskets have since be re-designed (twice). If the engine itself is smoking, than you probably have an grease leak, another adjectives isssue. The most likely nouns is at the rear of the engine, above the exhaust. Oil leak from the rear seperator plate drops directly on the exhaust. This plate have also been re-designed, in a minute metal instead of plastic. I would look the engine over for leaks...and maintain an eye on your temp gauge and coolant rank.
Not sure of your mechanical education so here are a few things too check:
When car is cool assure your anti-freeze (coolant surrounded by radiator) is at proper level. There should be a resevoir stale too the side that should show the proper level... you could hold a small coolant leak ......
Power steering pump grease level?
Tranny fluied height?
Oil leak... okay as long as it's good on the dip stick.
You probably hold 100,000+ on the engine and it may have developed a small engine discharge and dripping down on exhaust..
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