3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
I'm starting to notice a bit of roughness when at idle or when rolling very slowly. I'm running just fine when on the gas. How can I tell if it's time for a tune-up? It's a '99 328i automatic with 80K miles.
Also, just had an oil change (could that have something to do with it, or was that just a timing coincidence?). The boneheads put natual oil in the thing! My original plan was to run it for 3K miles and then get it changed back to synthitic. Is that a good plan?
And, when I check my dipstick, I notice the oil is reading overfull by about half a centameter, probably. Also, I noticed a little oil mess on my engine. It looks like a bit of oil sprayed out of the dipstick hole of something. It that possible? That doesn't sound good.
"over-oil" is not good. better to run the engine a quart low than a quart high. too much oil will result in greater pressure build-up, particularly worse when heated during operation. remove some oil (your car should hold 7 quarts if I'm correct).
for a tune-up procedure, recommend the following:
1) perform a "hot soak" (search this forum for the procedure)
2) oil change
3) spark plug change
4) air filter change
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