hey guys i accidentally purchased 3qts of 5w-50 full syn motor oil for my car instead of the reg 10w-30 or 5w30 full syn. I accidentlly put 1qt of the 5w-50 am i screwed do i have to change the oil all over? So total since i was too lazy to go back bc i only have one car this is what i put in it

all castrol by the way

1 qt full syn 5w-50
2 qt full syn 10w-30
1.25gt semi syn of 5w-30

am i screwed??

please help the car is a 99SEL and 117k


thanks

how long have you been running it? I wouldn't worry about it, just do a an oil change to 5w-30 as soon as you can.

i just put it in

where you live?

i think i'm just going to drain it and get the right oil, damnit!!!

tampa. fl and it is that time of the year where it is a low of 70 and a high of 80 consistenly

I'd say you're fine, im in rochester NY and run 0-40 all year long, the euro cars spec 50 weights IIRC and there engines are exactly the same, but do as you fancy

i'm only worried because i don't want the engine to start leaking is that even possible?

man change that ****... y even post..

Forget the Castrol and use Mobil 1 5w30 or 10w30 synthetic oil.

I've used 10w-40 and 20w-50 before. I actually like them better, I get less clatter in the morn, runs quieter with less noise or vibration when warmed up, and I don't hafta top off as often. So nowadays, if I buy regular dino or synth, I get the thicker stuff. If I get high mileage, I go for 10w-30. I'm at 209k miles right now.

Jae

dont use any oil besides valvoline and royal purple they meet the highest standards
castrol is the really cheap stuff and mobil is just above that
dont believe me look at the back of the bottle and look at the little circle and c what it protects against

guys i change th oil every 3k and i don't auto x i'm not too worried about using castrol just let me know if what i've done will destroy my engine?

I ran my cars on 5w50 Syntec for years, no problems. I run the Euro 5w30 Syntec or Castrols high performance Euro oil now. I work for a Porsche,BMW,VW dealer so the Euro oils are on hand when I need them. If they are spec for BMW M cars, Bently Bi-turbos, W12 Phatons, ect,ect for extended service intervals, I think they will be fine in a VQ.

I don't understand the 1.25qt 0f semi-synth?? Sounds like you just added what you had on hand, not the best setup but I would not expect damage from mixed oil.

ya thats all i had left since i only had one car and no one to get me to the auto part store.