OLM and extended drain oils?

[thereed]

Has anyone tried running an OLM dictated OCI X2 using an extended drain oil like Amsoil, Royal Purple or Red line? Any UOA out there showing the outcome? Does this sound like a horrible idea?

Considering my GM OLM was designed around the use of a conventional oil that was not engineered for extended OCIs, it would make sense that using one of the oils listed above would be good for a double run as per OLM. What do you all think?

 

[HTSS_TR]

My 1994 LS400 doesn't have OLM, the recommend OCI is 7.5k miles with conventional oil. I used M1, Synpower, PP ... with 12-15k miles or 1 year OCI, when it had conventional oil the OCI was cut to half (but the filter was 1 year)

 

[Quattro Pete]

Originally Posted By: thereed
Has anyone tried running an OLM dictated OCI X2 using an extended drain oil like Amsoil, Royal Purple or Red line? Any UOA out there showing the outcome? Does this sound like a horrible idea?

My car's OLM would want me to change its oil about every 15K miles based on my current driving patterns. I had the oil analyzed at less than half that interval (6K miles) and the lab was already suggesting the oil was spent and needed to be changed. That was with quality synthetic oil. I would not dare running an oil twice the OLM suggested interval (30K miles), even if it was Amsoil, RP, or RL. I don't believe these three mfgs make oils that are 2x better than what I'm using, but that's just my opinion.

 

[A_Harman]

I've been running past the OLM the last couple of changes on my Camaro. When the Change Oil light comes on, normally at 7500 miles, I take an oil sample and send it off for analysis. On the last OCI with Red Line, the TBN was down to 2.3, so I extended the change out to 9000 miles.

 

[Artem]

RP isn't an extended use oil though so i don't understand why it's included...?

My 07 Civic EX's OLM runs the OCIs out to 6-7k. I'm gotten UOA results suggesting 12k shouldn't be a problem. That's pretty close to almost 2x the factory recommended interval as i'm sure i could run the Amsoil SS oils out to 15k before the oil is completely done.

That said, i don't see what the big deal is with going 2x the OLM recommendations. Extend the OCIs out as long as possible backed by a UOA and call it a day.

 

[dave1251]

Originally Posted By: Artem
RP isn't an extended use oil though so i don't understand why it's included...?

My 07 Civic EX's OLM runs the OCIs out to 6-7k. I'm gotten UOA results suggesting 12k shouldn't be a problem. That's pretty close to almost 2x the factory recommended interval as i'm sure i could run the Amsoil SS oils out to 15k before the oil is completely done.

That said, i don't see what the big deal is with going 2x the OLM recommendations. Extend the OCIs out as long as possible backed by a UOA and call it a day.


Do not say that RP is not intended to be an extended drain oil, unless you want to get flame blasted by the RP lovers on here. Back to the OP I think the oil companies have came to close to catching Amsoil and the other blenders that had the extended drain market. That is not saying Amsoil is not one of the best blenders in the market but I would not use any oil 2x the OLM.

 

[Solarent]

Originally Posted By: Quattro Pete
Originally Posted By: thereed
Has anyone tried running an OLM dictated OCI X2 using an extended drain oil like Amsoil, Royal Purple or Red line? Any UOA out there showing the outcome? Does this sound like a horrible idea?

My car's OLM would want me to change its oil about every 15K miles based on my current driving patterns. I had the oil analyzed at less than half that interval (6K miles) and the lab was already suggesting the oil was spent and needed to be changed. That was with quality synthetic oil. I would not dare running an oil twice the OLM suggested interval (30K miles), even if it was Amsoil, RP, or RL. I don't believe these three mfgs make oils that are 2x better than what I'm using, but that's just my opinion.




+1 My wife's 3 series gets oil changes done at the dealership with the recommended Castrol. My UOA sampling gives us 18000 km per change vs the recommended 24 000 km.

NEVER Run an extended OCI without doing UOA - to do so is a recipe for disaster IMO.

 

[sciphi]

It depends on the car. One of our cars would be fine. The other chews through name-brand syn oils during an OLM-length run.

 

[DinoLover]

Those German cars in particular scare me with their long OCI's.

From what I've read and seen, Lexus / Toyota seem to be easy on oil while Nissan can be pretty tough. Ford seem to be quite easy also.

It seems that with the push to more efficiency whether it is more turbos, higher compression ratios, 4 cylinders instead of 6, energy conserving oil, oil is taking more of a beating per mile than it used to. Eg a 1994 Lexus LS has OCI of 7500 miles while up until just recently, more recent Lexus were 5000 miles.

 

[Rand]

That might be something as simple as DI reducing the OCI.

 

[Capa]

Originally Posted By: Artem
RP isn't an extended use oil though so i don't understand why it's included...?

Agree, Redline is questionable as well and only Amsoil's top oil is truly considered extended drain. Mobil EP is extended drain but I personally wouldn't double the OLM with any extended drain oil.

 

[Pablo]

I've done a couple 3X OLM on the wife's van. Usually 2X, though. Amsoil - 6+ varieties so far.

 

[cp3]

I think the best thing to do would be to get an analysis done and go from there like A_Harman has done. Would be interesting to see for sure. Thought about this for the G6 as well. The longest the OLM has gone is 10000km, you have to think M1EP or Amsoil AZO/ASL should be ok for two times around....

 

[gfh77665]

Originally Posted By: dave1251
Originally Posted By: Artem
RP isn't an extended use oil though so i don't understand why it's included...?

Do not say that RP is not intended to be an extended drain oil, unless you want to get flame blasted by the RP lovers on here.


Well, Dave, take a read from RP's website before you continue your mindless bashing of Royal Purple:

Royal Purple suggests adhering to manufacturer’s recommended oil change intervals for vehicles under warranty using its API-licensed SAE engine oils. With Royal Purple HPS, drain intervals may be extended to 12,000 miles (20,000 Km) or one year, whichever occurs first in street-driven, mechanically-sound vehicles. For guidelines specific to your vehicle, we recommend contacting our technical department.

Why is RP is bashed so much here?

 

[dave1251]

This was my point. Did I say anything bad about RP? No I did not.

 

[Brigadier]

My wife's 95 Buick LeSabre has an OLM. The manual says to change oil at 3k under severe service, or 7500 for 'normal' service conditions, or follow the OLM. Since my wife's commute is a whopping 5-6 miles round trip, we fall under the severe service category. The manual says that under SS conditions, the OLM may light up in as little as 2k miles.

Now, given that this OLM algorithm dates back to 1995, and oils have come a long way, are you all that say to NOT run 2X the OLM saying that if I run a good synth that I should NOT go 4-6k miles OCI?

 

[dave1251]

Originally Posted By: gfh77665
Originally Posted By: dave1251
Originally Posted By: Artem
RP isn't an extended use oil though so i don't understand why it's included...?

Do not say that RP is not intended to be an extended drain oil, unless you want to get flame blasted by the RP lovers on here.


Well, Dave, take a read from RP's website before you continue your mindless bashing of Royal Purple:

Royal Purple suggests adhering to manufacturer’s recommended oil change intervals for vehicles under warranty using its API-licensed SAE engine oils. With Royal Purple HPS, drain intervals may be extended to 12,000 miles (20,000 Km) or one year, whichever occurs first in street-driven, mechanically-sound vehicles. For guidelines specific to your vehicle, we recommend contacting our technical department.

Why is RP is bashed so much here?


I have to thank you. I went back to RP'S website after your post. I have to say RP'S marketing is even more ludicrous than I remember it provided me with a couple of hours of comedic entertainment I enjoyed it.

 

[fdcg27]

The engine in the car, which you didn't share with us, would matter a great deal.
One of the GDI motors?
Heck no.
An Ecotec?
Very possible.
How you drive the car also matters.
Short trips?
No.
Mostly longer drives?
Maybe then.
You would need to do a UOA to check on how the oil is holding up, though, and you might want to start with a UOA at 0% OLM with whatever oil you choose to use, and open up the envelope from there based upon the condition of the sampled oil.

 

[thereed]

My truck is a chevy colorao with tha atlas 2900, which is a 4 cyl. version of the I6 that went in the Trailblazers. These engines seem to be pretty easy on oil and were speced for basic dino in regards to there OLM. The question was really just a thought I had, I dont think I would actually try it. I dont make enough money to use my truck as a lab rat.

 

[Gene K]

It depends...How conservative the OLM is seems to vary by make and model

For instance the late 2000 Dodge Ram 1500 OLM is notoriously conservative. They hold 7 quarts of oil, the maximum is 6000 miles and owners with a heavy foot routinely have the OLM trigger at 2500 miles. In those trucks with M1 EP I doubt 2x OLM would create a problem.

On the other hand Ive seen some GM that spec conventional (pre-Dexos) and the OLM triggers at 14,000+ miles. I think a 29,000 mile run with no UOA would be foolhardy on any lubricant.

If you are willing to get a pump and pull samples at intervals for UOA to prove the lube at 2x OLM then after its proven I think it could be safely done.