What would you do?
- Thread starter Toyoguy
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If your vehicle eats or leaks oil, dump 7 quarts in. If it doesn't eat or leak, then 6.5 qts.
Originally Posted By: Whimsey
Originally Posted By: Koz1
When you empty an engine of oil and fill with the proper 6.6 quarts it will be over filled. You will not get every drop of oil out.
The manufactures account for that when specifying refill quantities. For a new engine the initial fill quantities are greater than the refill quantities, at least what I recall with my Ford's. When I refill with the required 6 quarts in my truck it is spot on the full line.
Whimsey
Yep that's usually the case... My '07 Grand Marquis is dead on full at the specified 6Qt, my '98 with 5 qt capacity is always a third quart low when changed... I never worry about it, will add a full quart when it down to add... My beater F150 is approx full with 6 qt...
Originally Posted By: Koz1
When you empty an engine of oil and fill with the proper 6.6 quarts it will be over filled. You will not get every drop of oil out.
The manufactures account for that when specifying refill quantities. For a new engine the initial fill quantities are greater than the refill quantities, at least what I recall with my Ford's. When I refill with the required 6 quarts in my truck it is spot on the full line.
Whimsey
Yep that's usually the case... My '07 Grand Marquis is dead on full at the specified 6Qt, my '98 with 5 qt capacity is always a third quart low when changed... I never worry about it, will add a full quart when it down to add... My beater F150 is approx full with 6 qt...
Put in 6.6 quarts of oil and start the engine for a minute. Then for your own information, check the oil level on the dipstick - it will likely be a little below the "full mark". Then add the remaining .4 quarts to bring the level about 1/8" above the "full mark", which isn't going to hurt anything.
With this in mind, just add the full 7 quarts for future LOF changes.
With this in mind, just add the full 7 quarts for future LOF changes.
My 1999 GMC Sierra (sold) claimed a 6 quart capacity in the owners manual. It was always about a third of a quart below the full line after 6 quarts added during an oil change (after running engine.) I never understood this. In any case, it ran great that way for 286,000 miles when I sold it.
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Originally Posted By: Kuato
Originally Posted By: Toyoguy
You would figure the auto companies with all their tech genius or engineering know how would figure out a way to stick with even number quarts. I'm sure it would not be that hard to figure out the amount of oil needed to protect the engine and then add whatever volume is closest to the whole quart to the oil pan. That way an oil change would be easy and you wouldn't have to save the excess for a later date. Or maybe I'll gut put on a bigger oil filter.
This issue would be easier to fix if the US joined the rest of the world in using the metric system.
In your place I would use 6.5 quarts, the missing 3.2 ounces won't make a difference. Measuring...plenty of ways to skin that cat.
This is what I'd do. 6.5qts and that way you will have a "rotating" half quart and it's much simpler than having 0.4 left over needing 0.2.. rinse and repeat. I'd call it a day at 6.5qts.
Originally Posted By: Toyoguy
You would figure the auto companies with all their tech genius or engineering know how would figure out a way to stick with even number quarts. I'm sure it would not be that hard to figure out the amount of oil needed to protect the engine and then add whatever volume is closest to the whole quart to the oil pan. That way an oil change would be easy and you wouldn't have to save the excess for a later date. Or maybe I'll gut put on a bigger oil filter.
This issue would be easier to fix if the US joined the rest of the world in using the metric system.
In your place I would use 6.5 quarts, the missing 3.2 ounces won't make a difference. Measuring...plenty of ways to skin that cat.
This is what I'd do. 6.5qts and that way you will have a "rotating" half quart and it's much simpler than having 0.4 left over needing 0.2.. rinse and repeat. I'd call it a day at 6.5qts.
OK, I'd first research the filter situation. If there is a chance to use and oversized filter (?) I'd do that. I always do if I can because it makes the cold start flow easier (more media surface means less back pressure). It also adds some capacity and cooling area.
So using a bigger filter, you might easily get to the full 7 qts.
If that's not an option, then fill with 6 and wait for it to come down to the Add Mark with some mileage and top up
M-1, QSUD, PP, there are a bunch of choices in synthetics that you can select from. All very good and all available from various sources. At the price of syn's you can qualify for free shipping in many cases
For filters that will run long OIC's, I'd use WIX (Napa Gold same), or Baldwin (Hastings same). They are both very well made with excellent ADBV which really help on cold start to make sure the galleries are as full as possible
So using a bigger filter, you might easily get to the full 7 qts.
If that's not an option, then fill with 6 and wait for it to come down to the Add Mark with some mileage and top up
M-1, QSUD, PP, there are a bunch of choices in synthetics that you can select from. All very good and all available from various sources. At the price of syn's you can qualify for free shipping in many cases
For filters that will run long OIC's, I'd use WIX (Napa Gold same), or Baldwin (Hastings same). They are both very well made with excellent ADBV which really help on cold start to make sure the galleries are as full as possible
our local toyota dealer for years put in 1/2 to 1 qt more than needed- almost an inch on the dipstick,,always
Originally Posted By: bigt61
Originally Posted By: Merkava_4
If you couldn't find any Mobil 1 5W-30, do you have an alternate choice ?
Yeah, hardly anyone sells that anymore.
OP - I was being facetious. When you get re-located over here you can probably throw a rock and hit a bottle of M1 5W-30. It's everywhere.
Originally Posted By: Merkava_4
If you couldn't find any Mobil 1 5W-30, do you have an alternate choice ?
Yeah, hardly anyone sells that anymore.
OP - I was being facetious. When you get re-located over here you can probably throw a rock and hit a bottle of M1 5W-30. It's everywhere.
Every vehicle I have added the correct amount has always been over filled. It always ends up being less than stated.
I agree that the exact amount specified by the owner's manual is usually not what you need to add to get it perfect. That's why I always add less than that number, usually by a quart or so, and do my pressure check. After the filter is filled and the oil drains back to the sump, I check the level and adjust after having it sit for 5 minutes. You won't do any damage by being a quart under filled at idle. There's usually a quart or two at most that circulate in the engine at any given time, and the rest is in the sump covering the oil pickup. Fill a quart shy of the target quantity and check. It's a lot easier to add oil than to take it back out. I wouldn't risk aeration by overfilling. I'd rather go with a bigger filter, or put the fraction of the quart left over into the back seat or trunk as emergency top off oil.
I often overfill, although a half qt seems like a fair amount to overfill. Let's be real here though: being half a quart low isn't going to hurt anything, not unless if you are bouncing off the rev limiter all the time. So I'll be contrary for a bit and say round down.
No seriously, go low, start it, run it, then let it sit over night. Pull the dipstick first thing in the morn before starting. How low is it? If it's at the bottom of the "add a quart" then you know you should round up a quart. If it's half way, then you know you're good to go.
No seriously, go low, start it, run it, then let it sit over night. Pull the dipstick first thing in the morn before starting. How low is it? If it's at the bottom of the "add a quart" then you know you should round up a quart. If it's half way, then you know you're good to go.
Normal operating range is between Add and Full. Anywhere in there is fine. There is no need to get it full unless you are going off-road and will be rock crawling and tilting like crazy, or very steep hill climbing/descending where you might uncover the pick-up ...
Originally Posted By: Whimsey
The manufactures account for that when specifying refill quantities. For a new engine the initial fill quantities are greater than the refill quantities, at least what I recall with my Ford's.
Yes, I've seen plenty mention capacity with filter change, capacity without filter change, and capacity from dry, particularly if there is a significant difference (i.e. check the Mazda RX-8 for a good example).
The manufactures account for that when specifying refill quantities. For a new engine the initial fill quantities are greater than the refill quantities, at least what I recall with my Ford's.
Yes, I've seen plenty mention capacity with filter change, capacity without filter change, and capacity from dry, particularly if there is a significant difference (i.e. check the Mazda RX-8 for a good example).
Originally Posted By: Toyoguy
Originally Posted By: Merkava_4
Originally Posted By: bigt61
Yeah, hardly anyone sells that anymore.
I was gonna suggest the OP pretend like it's not available and go with the alternate.
So...thats unfortunate. I figure, if I can find it on base here in England, it would be available there. Just to confirm, we are talking the regular Mobil 1, silver bottle right? Oh well.
M1 5-30 is one of the best 5-30 oils out there. You can easily do 10K OCIs. At least that's been my experience for decades with M1 oils.
Originally Posted By: Merkava_4
Originally Posted By: bigt61
Yeah, hardly anyone sells that anymore.
I was gonna suggest the OP pretend like it's not available and go with the alternate.
So...thats unfortunate. I figure, if I can find it on base here in England, it would be available there. Just to confirm, we are talking the regular Mobil 1, silver bottle right? Oh well.
M1 5-30 is one of the best 5-30 oils out there. You can easily do 10K OCIs. At least that's been my experience for decades with M1 oils.
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