LI Sound Grunt

Accidentally topped off the last quart of my six guard engine with 30W bar and chain oil. All those Walmart containers are the same blue. It says superior quality lubrication of bar and chain.

So do I drain it all and start do the oil change again?

Yep I finally joined the THT greater fools club. LOL

mikefloyd

I doubt if it makes any difference but if it bothers you I would change it.

Lprizman

Run it

Dillard88

Does your car have a timing belt or chain?

HookMeUpII

I'd be shocked if it caused issues. Probably diluted its weight through the oil that is already in there. I'd just run it and change at regular interval.

Trayder

what kind of car? As we are on THT one never knows.... if its your Bugatti maybe have Alfred change it out but other wise here is a video of a guy that tested it: does not look like it will be an issue moreso that its diluted in your case

autobaun70

About like adding a quart of old school STP or Hi-Tach. I would personally let it sit for a few hours and drain out, letting it drip for a few more. Then do the next oil change pretty quick. New motors aren't designed for thick oil.

Bront Antwoord

wont hurt it at all, just increased viscosity a bit.

Bridgeman53

As long as it’s brown and slippery you’re alright.

acme54321

I would definitely drain it and refill.

LI Sound Grunt

Yes I suspect just a slight increase in viscosity but it is a new car and first oil change so I am letting it drain and refilling knowing I haven't started it; so it isn't in the filter so at least I don't have to take that off again.

My response to everyone here would be run it! But it is my new baby Tahoe so it is getting another change -gonna take a while to drain as I didn't start it but oh well live and learn. But it is 0-20 full synthetic so not real thick when cold.

Thanks to all - I now don't feel so bad if there is still some residual in there....

Cobia 217

In true THT fashion, I've run bar & chain oil in all my vehicles for years with no problems. They sounded like Stihl's but who cares? Nowadays I'd have done what you did and changed it.

lugoismad

In modern engines that have small oil passageways, I would definitely dump and refill.

If this was an old 350 small block, it wouldn't be a big deal.

RipTideBBQ

I know bar oil isnt meant to run thru an engine, but I’m guessing that little amount won’t hurt. Hell, I run TCW-3 2 stroke oil mixed in my truck’s gas at a 1:500 (approx) mixture.

Leonidas514

Tesla?

LI32

The difference in viscosity between 0w20 synthetic and straight 30w is huge.
Plus bar oil has no SAE rating and can coke on the GM V8 engine pretty quickly. For those saying it is only a little bit - it is 18% of the OP's engine's oil capacity.
For an fyi, the viscosity of 30w bar oil is 12.2 @ 100C; while Mobil 1 Ow-20 is 8.6.

noelm

You have two options, debate it and wonder who is right, and whether the engine will be OK, or, spend a few dollars, change the oil and carry on with life.....your choice.

Freediver16

I'm an arborist. Good call to change the oil. Many people don't know that bar oil has additives in it to make it stick to the bar of the chainsaw. Without them the underside of the bar would not get enough lubrication and burn up. I imagine that that stickiness would do a number on things inside an engine. Especially on the piston rings.

crabbinmike

I would not t only drain it out I would pour a few quarts of clean oil in to try to flush out what is left in the head and pan

deckape

Now run the changed oil thru your chain saw.