[Drod24]

What is the best oil to put into a 3.8 V6?

 

[Blackedout]

Royal purple

 

[Blackedout]

10w30

 

[1slosix]

RP is overkill...a conventional 5w20 is all the car needs to perform nicely. if you want synthetic go for it but you don't have to spend RP money to get it. Castrol syntec usually runs around $30 with 5 qrts and a filter at most autoparts stores. (the filter is usually a higher end one too like k&n or bosch)

 

[Camo1967Mustang]

Castrol is awesome, used it in my baby for a long time
and its cheaper at walmart

 

[Justasix98]

Castrol is awesome, used it in my baby for a long time
and its cheaper at walmart

I've always run Castrol GTX in all my vehicles

 

[Drod24]

I know royal purple is a high end oil but what is so special about it?

 

[Venomouz831]

Royal Purple’s advanced additive technologies, such as Synerlec, enable its products to outperform leading synthetic and conventional lubricants. These unique chemistries strengthen the base oil for improved performance. They also create an ionic bond that adheres to metal parts for continuous protection.

 

[Mustangman92]

^ This guy sounds like a royal purple salesman haa but what he said is accurate and it is great stuff I used it for my rear diff and 4.10 gear swap... Works amazing but it is pricey

 

[Blackedout]

I use royal purple in everything. Ha ha. Rear end, powersteering, transmission fluid, engine oil, coolant additive, brake fluid, etc. I wish they made a drink called royal purple.

---------- Post added at 12:23 PM ---------- Previous post was at 12:22 PM ----------

Castrals great oil.

---------- Post added at 12:23 PM ---------- Previous post was at 12:23 PM ----------

Racers off fast and the ferious used castrol

 

[Mustangman92]

Haha idk if the racers off fast and the furious using castrol is a good point ha it could just be for product placement that castrol paid for

 

[Skargon]

Synthetic oil has a different flow pattern, it may still be 5w-30 or 5w-whatever, but it is still thinner than conventional oil, Therefor on an older car, you may find leaks where there were none before, also your valve train might be a bit louder due to the thinner fluid, their is nothing wrong with using synthetic oil on an older car, it is not going to set it on fire, it's just something you can consider when thinking of changing to Synthetic oil, Most "synthetic" oils are actually a blend, Look for things like Castrol syntec, or Mobil 1 to find full synthetic written on the bottle.

I used to use Castrol High mileage Synthetic Blend, but recently I switched back to my old faithful Pennzoil High Mileage conventional, and my valve train is a bit quieter, and the sound of the engine is a bit smoother, And a pin hole drip I used to have, is not there anymore, So these are all just things to consider.

No performance gain that I can speak of, but some people swear more expensive oil gets them more horsepower.. But if I spent 9$ on a quart of oil, I would want to feel more power as well.

 

[Drod24]

Thank you all this stuff really helps out!!! What's th best oil for high performance oil? For a 3.8 V6

 

[1slosix]

Depends on what you're gonna put the motor through to be honest. Id say just use a decent synthetic and call it a day

 

[Blackedout]

I run my motor hard a lot

---------- Post added at 03:25 PM ---------- Previous post was at 03:24 PM ----------

But I've seen how good royal purple was personally

 

[1slosix]

Lol why's that?

 

[Mustangman92]

I'm guessing because nothing has ever broken and his performance has been good

 

[1slosix]

I'm guessing because nothing has ever broken and his performance has been good

that's not an answer to my question lol

 

[Mustangman92]

To answer it I guess it's not possible to physically see it haha

 

[1slosix]

no an answer to why you'd run it hard are things like racing it, a lot of driving...things of that nature lol. take the new 5.0's for instance....ford recommends 5w20 for gas mileage and 5w50 for track use in the same motor