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which Rotella?
- Thread starter EUGENE
- Start date
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- f-twin oil rotella
alancoles
Dress for fall & avoid it
You've not said which you are looking for, but my recollection is that most F-series bikes call for 15w50 Semi-Synthetic.
If you want to run a 15w40 Rotella, I would suggest their T6 as it is fully synthetic and therefore should provide as good or better protection as the original spec.
The differences between the Rotella offerings you listed are:
T4-dino (regular mineral oil)
T5 synthetic blend
T6 full synthetic
Not sure about T4 and T5 but my Rotella T6 is JASO MA2 certified, which is what you want for an F-series.
If you want to run a 15w40 Rotella, I would suggest their T6 as it is fully synthetic and therefore should provide as good or better protection as the original spec.
The differences between the Rotella offerings you listed are:
T4-dino (regular mineral oil)
T5 synthetic blend
T6 full synthetic
Not sure about T4 and T5 but my Rotella T6 is JASO MA2 certified, which is what you want for an F-series.
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alancoles
Dress for fall & avoid it
Yes. Sorry, I wasn't very specific there.Semi- synthetic is equal to synthetic blend, yes?So that means T5.
One should note that there are several brands (Castrol, etc.) that due to a court ruling, are able to sell a blend (that meets specific requirements) as full synthetic. But for my money, you can't go wrong with Rotella, provided you are using the right oil type and grade for your application.
Semi- synthetic is equal to synthetic blend, yes?
You can do some research on the Internet for yourself and get a lot of opinions...that are probably no better than what you'll find here. Even on the Bob's the Oil Guy forum, the "experts" are probably just posters who have been there awhile and had their oil analyzed. I doubt many engineers who design engines spend much time on this forum, or that one.
My personal opinion is to either go with a full synthetic, or conventional oil. A "semi-synthetic" IMHO is a waste of money. I haven't seen a percentage of how much "synthetic" oil is actually in a "semi-synthetic" oil container. Is it 70%? 50%? 30%? 10%? I don't think you'll find it defined, and I'll bet it is toward the lower ratios.
However, you pay almost as much for a semi-synthetic as you do for a synthetic.
Oil purists will get upset at this idea, but I wonder what the difference would really be if you blended the conventional oil of any brand with the synthetic oil of the same brand in the ratio you wanted to come up with. Would it be any difference in buying a "semi-synthetic"? It's just a rhetorical question. I'll stick with the T6 that I've been using now for about 130,000+ miles.
Chris
Semi- synthetic is equal to synthetic blend, yes?
Check the spec it seems T5 doesn't meet what the bike requires, T4 and T6 apparently do.
Just came across this in a thread where somebody had issues with clutch after an oil change.
As everything was scrutinized until the real problem was found, the T5 spec being wrong came up.
Hope this helps.
P.S. he had it overfilled 0.25L and all was well after removing it. And he had planned to switch from T5 soonish.
Sent from my iPhone using Tapatalk
Realshelby
Addicted to windshields
Shell Rotella T-6 is no longer "certified" for use in gasoline engines. It will not carry the API rating on the container. Is it different from the T-6 I have been using in the RT? They won't say what changed, I called the tech center here in Houston. But know that they no longer recommend it for use in gasoline engines. Probably marketing.
Shame, as it was the only readily available oil that met every spec for use in the Wethead Boxer.
Shame, as it was the only readily available oil that met every spec for use in the Wethead Boxer.
The JASO rating is what you should be more concerned about. Here's a quote from the Oil Specifications page that explains the rating well. https://www.oilspecifications.org/jaso.php
beemerphile
New member
I thought oil threads weren't supposed to start until winter. Is this a sign of a harsh winter like thicker corn husks or woodpeckers sharing a tree?
guenner
Member
Guilty!
Now back to my planned motorcycle tour to the South Pole this winter...
/Guenther
