^this+1 for going by the dipstick. If it were only 1/2 a quart it's unlikely to cause an issue, but why not just do it right and save the 1/2 quart for the next change. I end up with "free" oil every 9th change.
agreed, this engine is fairly forgiving for minor overfills, provided its not 2-3 quarts!
Same here (well, only for the two oil changes I have had it for...). With a VCM muzzler, no oil burning between changes (every 5k miles) and the level always stays just above the max line.
I have always used 4.5 qts and oil level remained right at the full mark until about 3500 miles. After that, the oil level appears to go above the full mark (fuel dilution???). Have either of you noticed this when you use the full 5qt jug?Same here (well, only for the two oil changes I have had it for...). With a VCM muzzler, no oil burning between changes (every 5k miles) and the level always stays just above the max line.
Thx for the suggestions. It is certainly possible that short trips are contributing to this issue. We use this van for short trips most days, but it also gets at least one 10+ mile trip most days. I would assume that would be enough to burn off any water, but TBH I haven't paid that much attention to how the van was driven when the oil level increased the most (about 1/4 inch over the hashed area on the dipstick). I have an oil change coming up soon, so next round I will pay more attention to my wife's driving habits (got lots of time for these things now that I will be working from home for the next x months!)Not me. To maybe explain the increase in volume you're seeing - sometimes engine oil will absorb water and volatile liquids (e.g., gasoline) from the blow-by gases, especially when the car is used in a way that does not allow it to really get up to high temperature and stay there for a while. What happens in those cases sometimes, is that they will then go on a long drive, burn off the ~1/2 - to - 1 quart (for engines with 11 quarts) of volatile components, find their oil level has dropped dramatically and wonder if something went wrong.
10 miles still doesn't fully warm up a vehicle... The coolant gets up to temp fast, but the oil takes longer than that.We use this van for short trips most days, but it also gets at least one 10+ mile trip most days.
I find this claim to be extraordinary. I have not conducted a statistical analysis of actual parts in the field, but I would bet the dipstick is at least as precise as the oil capacity specification. Most oil specs I've seen are in quarts/liters to one (1) decimal place, which gives a tolerance of about 3 ounces.Going by the dipstick exclusively is a mistake. Its possible for the dipstick to be slightly inaccurate because of how its mounted as well as the actual manufacturing tolerances on the stick. The
oil pan and engine dimensions are absolutely consistent and accurate in comparison. IOW, all of them within a class are just alike.
Maybe. This depends on how thoroughly it was drained, and also on the manufacturer's procedure for checking. Some like it hot. Some like it cold. Drainback time may vary. Subaru is clever enough to give both "cold full" and "hot full" on the dipstick.So, the most correct procedure is to replace the oil with the specified amount, run the engine to operating temperature, allow it to drain back for at least two minutes on a level surface, then pull the stick, wipe it, pull it again and note where the oil line falls on the stick - this is the correct oil level.
Six - is that 6, 6.0, or 6.000? How precisely do you drain your oil bottles? Do you also have a calibration certificate for your tire gauge?For example, my Ford truck takes six qts. With the correct amount of oil, the level falls exactly between the 'Min' and 'Max' lines on the stick. If someone who didn't know any better went only by the stick, they would probably overfill it - they all do the same thing with air for tires (if enough is good, too much is better).
All you really need is the clear strip on the side of the quart bottle. These are usually marked in 2-oz increments, which is within the tolerance of the one-decimal-point capacity specification as outlined above.All you need is a 1 qt. measuring cup but it must be perfectly clean.
Pretty obvious everyone on this thread checks their oil. What is your opinion regarding the OP's question about adding the extra 0.5 qts (5 qts instead of 4.5) of oil during an oil change?TL;DR - Whether or not you check your oil at all is orders of magnitude more important than precisely how you check it.