2k Cobra

My 13 GS is a "Wet Sump".

Got an oil change from dealer that stated 6 Quarts. When I checked the dipstick, it was overfilled quite a bit. Yes, the filter was changed as well.

I have heard that these no longer have an engine oil cooler thus not needing the full 6 quarts for a fill.

Your input appreciated.. 2k

timd38

Look in the owners manual.

2k Cobra

It says 6 Qts. Too much money to reprint it.

Nice engine compartment BTW Tim...

pocketrocket

Identical 13 GS wet sump. 6 quarts and its above the fill line. That is normal every time I've changed the oil.

CI GS

Same here. I don't think it will hurt anything, but I did notice that after an oil fill, my catch can catches a lot of oil for the first few hundred miles, then tapers off as the oil gets down to around the full level on the stick. This is most likely due to increased windage from the oil level being higher. Next time I change the oil, I'm probably going to put a pint less or so in it and see where that puts the level on the dipstick.

sevinn

They probably didn't give it time to fully drain.

timd38

My 06 owners manual says that if you track the car to run a quart over, so a little high should not be an issue, since they are basically the same engine.

I have a stroked LS3 in it now, and run it over fill with no issues.

HOXXOH

There was a thread about this a year or two ago. Research showed that there was wrong info that was distributed by GM to several sources, including dealers, and the corrections were not globally updated.

The error didn't cause damage, so there was no serious push to get it corrected.

The correct amount of oil is 5 1/2 quarts for the standard LS2 & LS3 engine. IF, and I stress the IF, the car is equipped with an external oil cooler, THEN, and ONLY THEN, the correct amount is 6 quarts.

The notation about adding 1 extra quart when the car is being used at a track event, is to prevent temporary loss of pressure lubrication during high engine speeds when combined with extended lateral G-forces. The notation also mentions that the extra oil be removed after the event. Most owners understand the concept and those who don't, occasionally replace engines.

It seems that dealers and many commercial/independent shops would rather use the 6 quart figure to be safe (and maybe sell more product), because the expectation on the part of the guy who does the job to identify an external oil cooler is between low and non-existent.

Most people who do their own oil change, know the difference. Most people who have someone else do that service, don't know or care. If you care and know the correct amount of to be used, then be very specific with whoever is doing the job.

timd38

Good info!

2k Cobra

Thanks guys for the info!

I did a change myself and added slightly less than 6 Qts. and it showed full.

I'm beginning to think they didn't replace the filter. Oil on dipstick was ~1" above the full line. They also used the wrong oil. (Blend) I asked for M1 full synthetic.

Talked to the service manager and they made it right.

Pretty sad. I also had dealer problems when I had my C6Z with a dry sump. Abel seemed like the only one to work on my Z.

I guess I will be going to Abel again just for an oil change..

timd38

You hear these stories and then the car manufactures wonder why people don't want to use the dealer when the car runs out of warranty.

3X2

Correct procedure is to run engine until 170* oil temp, shut engine off, wait 5-15 minutes, then check oil level.

cclive

Bingo! The correct amount of oil is the amount that raises the level to the right place on the dipstick. Buy six quarts and save any that may be left over. No service place will charge for a portion of a quart, so six is what should be seen on a service invoice.