What oil do you use in your engine?

[dom w. forte]

The only reason I stick with the engine manufacturers oil specs. and not any oil companys specs, the manufacture has more testing of their engines and materials then the oil companys data, just my take.

[Wickedcummins]

I run Royal Purple witch is gf-5 and SN rated. Its out does the gf-4/SM rating. I run the 15w-40 but going to switch to there 5w-40 next oil change.. The royal purple guys said there 5w-40 would be better and includes come of there new additives!

You can get royal purple all over the place!

[IDBoating]

Just watch out for the other versions of Rotella. I believe some of them may still not be rated CJ-4/SM.

[petrey10]

i called a dealer in my area just to see if I could buy some from him...he said he doesn't really sell oil but to get Rotella T 15w-40 from NAPA and it will work just fine..... soooo thats what I got. I hope it works as good as the expensive Quiksilver stuff and Sierra brand stuff

[dom w. forte]

To make this even more confusing, every user having an opinion, you would think that the dealer, Tige, and engine manufacturer would all be on the same page as to which oil to use. They are not, which one of them is correct?

I dont think you could get all the dealers and manufacturers to agree on one specific, their are lots of variables, their climate , usage and personal experinece, for our shop here in fla. we deal with heat, humidity, salt and sand, we deal with lots of limited run performance cars, we have only ever used one brand of oil for over 50 years, and abide by factory specs, the only thing we recommend differently is we state, oil change every 50hrs or 6 months, as you said its all just opinions based on everybodys experence.

[ajholt7]

Does it look like this?

That is the full synthetic. I think I will use that on my next oil change. Seems to work well in the HEUI system on my diesel.

[TeamAllen]

Does it look like this?

[IDBoating]

To make this even more confusing, every user having an opinion, you would think that the dealer, Tige, and engine manufacturer would all be on the same page as to which oil to use. They are not, which one of them is correct?

I went through this nightmare last fall after purchasing my 24Ve. The CJ-4/SM rating is the critical factor, and I could not find a 15W-40 oil with that rating on retail shelves. I checked every automotive outlet I could find. I believe Rotella T did not bear those ratings at the time because I would have checked it (I use Rotella for my Case backhoe, so I'm familiar with it) but I could be wrong about that. I ended up finding 15W-40 oil with the proper CJ-4/SM rating at the local Mastercraft dealer, who buys it in 55 gallon drums. I took my own containers there and they sold me six quarts.

Now, Rotella T does have the proper rating. Perhaps it always did and I (and NAPA, and O'Rielly's, and everyone else) just misread it. Or perhaps they upgraded the rating in the meantime. Not sure, but today it has the proper rating so it is now an easy way to buy the proper oil.

I just got back from O'Rielly's and it is, indeed, on sale. I bought their last two gallons. Thanks for mentioning the sale!

[skippabcool]

To make this even more confusing, every user having an opinion, you would think that the dealer, Tige, and engine manufacturer would all be on the same page as to which oil to use. They are not, which one of them is correct?

[skippabcool]

If it was bad the manual would probably say to not use it. It says right in the manual that you can use synthetics but they do not prolong the interavals at which the oil should be changed.

If you are not using your boat for weeks (notice the plural) or months at a time them you probably wasted your money and should have rented.

There are tons of posts on here about oil and many many opinions to go right along with them. Unfortunately, in the end the user has to decide what is best from them and their situation. There are some users that have suggested not using dino or blends and have facts to back that up as well.

[IDBoating]

I didnt say I dont like them, I said it doesnt work well with limited used engines, such as performance cars and boats that sit for weeks or months at a time.

"Doesn't work well" is close enough for me!

[dom w. forte]

Warning: T6 is a full synthetic. Search here for Dom's opinions on full synthetic oils. Short answer: He doesn't like them.

I didnt say I dont like them, I said it doesnt work well with limited used engines, such as performance cars and boats that sit for weeks or months at a time.

[IDBoating]

I have always ran Amsoil but with the price going up and up I am thinking of switching to Shell Rotella T6 5W40. I run it in my diesel and it seems like a very high quality oil.

Warning: T6 is a full synthetic. Search here for Dom's opinions on full synthetic oils. Short answer: He doesn't like them.

[IDBoating]

Bringing this back from the dead...O'Reilly auto parts (or maybe another name in your area) has the 1 gallon of Shell Rotella T for $10.99 until 4/26.

That's the correct stuff. The "T" version is GF-4/SM rated (the other versions of Rotella aren't necessarily).

[ajholt7]

I have always ran Amsoil but with the price going up and up I am thinking of switching to Shell Rotella T6 5W40. I run it in my diesel and it seems like a very high quality oil.
http://www.shell.com/home/Framework?...t6_detail.html