In your opinion, what is the best High Mileage Oil? I'm currently using Castrol 10W40 in a 95 22RE with 135,000 miles. It has almost eliminated the oil consumption in my truck. I see alot of you like the Pennzoil. Any particular reason? Rando
Best High Mileage Oil?
- Thread starter Rando
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Rando,
Glad to see you found an oil that works for you .
Something I like about the Castrol is it's offered in the 5w30 wt for those in colder climates .
I think it was Patman that used this oil and had a great UOA .
Glad to see you found an oil that works for you .
Something I like about the Castrol is it's offered in the 5w30 wt for those in colder climates .
I think it was Patman that used this oil and had a great UOA .
Yes, as much as I like Pennzoil High Mileage Vehicle oils, they are formulated thicker so I wouldn't consider them ideal for colder weather.
--- Bror Jace
--- Bror Jace
Patman
Staff member
I posted a used oil analysis a few weeks ago on GTX HM 5w30 in my mom's car which looked ok, but the miles on the interval were rather short too (2350)
Yes Patman, the REALLY short intervals are always a trick. You expect (and sometimes get) really good results from them ... but the detergent/dispersant package is always at its strongest and it is sometimes actively churning up old leftovers at that point.
They tend to raise more questions than answer them.
--- Bror Jace
They tend to raise more questions than answer them.
--- Bror Jace
Pennzoil also has 5w30 high mileage. I'll say that the Castrol 5w30 high milage has cut the consumption down considerably in my Dad's Blazer compared to regular 5w30, and it gives about 3-5 psi more idle oil pressure when the motor is up to temp. The Castrol 5-30 HM also surpassed the Pennzoil High Mileage 5w30 by leaps and bounds in the infamous freezer test
Rando conventional 10W40 might be a bit thick with winter upon us.
Ususaly 20W50 in the for spring, summer and fall and 10W30 for winter works out very well in these engines. I am a new fan of 5W40 synthetic oils as an excellent comprimise. You might consider a 5W40 due to winter. You can try a GIII sythetic for about $12 a gallon. Walmart has Rotella T-Synthetic 5W40. THis should give you better winter performance and the reduced consumption all in one!
Ususaly 20W50 in the for spring, summer and fall and 10W30 for winter works out very well in these engines. I am a new fan of 5W40 synthetic oils as an excellent comprimise. You might consider a 5W40 due to winter. You can try a GIII sythetic for about $12 a gallon. Walmart has Rotella T-Synthetic 5W40. THis should give you better winter performance and the reduced consumption all in one!
From the tech data sheets I have seen on several high mileage oils, Valvoline's Maxlife is not as thick as the others and actually is a tad thinner than regular Valvoline.
Patman
Staff member
Their data sheet is wrong though, I found through my used oil analysis that Maxlife 10w30 has a viscosity of 11.5cst at 100c, not 10.5cst as their data sheet suggests.
I am using Valvoline MaxLife right now in my Jeep and I am pretty happy with it I have gained about 2-3 psi at run speed.
The only thing I am dissappointed about is it seems like I have lost about 1-2 MPG.
The only thing I am dissappointed about is it seems like I have lost about 1-2 MPG.
I just bumped this analysis to the top that was posted awhile back in the UAO section . Pretty good I would say even though it received few replies for going right at 10k miles !
Castrol Dino.............the 10k mile oil
!0/30 Castrol GTX High Mileage
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Changed oil in friends 1998 Hinda CRV 2.0l 4 banger after she said it had been about 6 months since her last oil change. Oil has 9,403 miles on it with NO, ZERO, I mean NO makeup oil. I had a few OAI sample kits around so I took a sample of what I thought would be abused oil. BTW this was w/ a TINY PureOne filter.
Iron=12
Chromium=2
Lead=8
Copper=13
Tin=0
Aluminum=6
Nickel=0
Silver=0
Silicon=11
Boron=2
Sodium=11
Magnesium=64
Calcium=1908
Barium=0
Phosphorus=1145
Zinc=1304
Moly=40
Titanium=0
Vanadium=0
Potassium=0
Fuel Water NONE
Soot/Solids NONE
Glycol NONE
Visc100=13.07
Oxid=47.0
Nitr=41.0
TBN=2.41
OAI advice was oil is suitable for continued use.
BTW she drives about 50 miles a day highway round trip for work.
Castrol Dino.............the 10k mile oil
!0/30 Castrol GTX High Mileage
--------------------------------------------------
Changed oil in friends 1998 Hinda CRV 2.0l 4 banger after she said it had been about 6 months since her last oil change. Oil has 9,403 miles on it with NO, ZERO, I mean NO makeup oil. I had a few OAI sample kits around so I took a sample of what I thought would be abused oil. BTW this was w/ a TINY PureOne filter.
Iron=12
Chromium=2
Lead=8
Copper=13
Tin=0
Aluminum=6
Nickel=0
Silver=0
Silicon=11
Boron=2
Sodium=11
Magnesium=64
Calcium=1908
Barium=0
Phosphorus=1145
Zinc=1304
Moly=40
Titanium=0
Vanadium=0
Potassium=0
Fuel Water NONE
Soot/Solids NONE
Glycol NONE
Visc100=13.07
Oxid=47.0
Nitr=41.0
TBN=2.41
OAI advice was oil is suitable for continued use.
BTW she drives about 50 miles a day highway round trip for work.
Is it possible that it thickened some in use? Wonder what a VOA would show. The high mileage oil tech sheets for Citgo, Chevron/Havoline (apparently same High Mileage oils), and Quaker State list 100C viscosity at 11.8, 12, and 1.2 respectively. If the Maxlife is 11.5 then it is not that much different for the 10w30s.
[ December 15, 2003, 01:06 AM: Message edited by: TallPaul ]
Paul,
When comparing these high mileage oils look at the vi @ 40c . You'll see a higher vi across the board than regular oils with decreased cold weather performance. It's not all about a higher vi @ 100c .
Less vi improvers/pour point depressants most likely along with heavier basestocks blended is another possibility.
When comparing these high mileage oils look at the vi @ 40c . You'll see a higher vi across the board than regular oils with decreased cold weather performance. It's not all about a higher vi @ 100c .
Less vi improvers/pour point depressants most likely along with heavier basestocks blended is another possibility.
Good point! 40C though not winter temps would indicate which oil is thicker coming off the cold end. Unfortunately, Valvoline does not give the 40C on Maxlife. I don't mind the thicker base oil as long as it works in winter. Maxlife that I use (10w30 and 10w40) I believe have -36C pour points--not bad at all. Perhaps the 10w40 Maxlife is more like a 15w40. But a thicker base oil in a 10w40 is good in so far as minimizing the number of VI improvers added.
Oh yes, I might add, as I recall, the pumping viscosity of the Maxlife is higher than standard oil, suggesting a thicker base oil, as also does the higher than typical flash point.
[ December 15, 2003, 10:41 AM: Message edited by: TallPaul ]
Patman
Staff member
I don't think it thickened in use for one big reason. My first UOA on this oil was with around 2300 miles on it and it showed a viscosity of 11.4 cst. The second one was with 3300 miles on it and it showed 11.5. So if the oil was indeed thickening during the interval, then the second UOA would've shown a thicker viscosity due to the higher mileage. My LT1 engine also appears to be very gentle on the oil in terms of viscosity, it neither thins nor thickens any oil I put into it (I probably should've tried RP in it just to see if it thinned out!)
Valvoline initially claimed a lower pumping point for their Max-Life. I attributed this to the ester content at the time.
But the oil has been reformulated at least once since then.
Does anyone know if they added the moly back into it yet?
--- Bror Jace
But the oil has been reformulated at least once since then.
Does anyone know if they added the moly back into it yet?
--- Bror Jace
Don't feel bad, I get few replies too.quote:
Originally posted by Motorbike:
I just bumped this analysis to the top that was posted awhile back in the UAO section . Pretty good I would say even though it received few replies for going right at 10k miles !
Castrol Dino.............the 10k mile oil
!0/30 Castrol GTX High Mileage
I'm interested in your method of pulling a sample, when how etc. and The type of use, ie
2-3 starts a day for X etc.
Patman
Staff member
The main reason you get few replies on your used oil analysis is because you refuse to tell us what type of oil you're using. What are people supposed to do with the info you're providing them if they don't know how they can duplicate your results?
You have a pretty solid case. I will not post that it is thinner any more unless it changes and a VOA or UOA shows it to be thinner. Thanks, Paul
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