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Group 2 mix with Group 4 #5334529 01/28/20 09:50 AM
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ridgerunner Offline OP
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2013 Subaru 2.5 na engine. Used group III in 0& 5-20 for a few yrs w/o issue. Switched to group 4 Amsoil 0-20 for the past 2 yrs. Oil consumption of a few qts between oci. Bit of a short tripper vehicle. UOA last yr for one yr oci resulted in oil being fine but with a few qts oil added. My remedy... added one qt of Pennsoil 5-20 with the Amsoil and now NO consumption at all! Problem solved. What do U all think?

Re: Group 2 mix with Group 4 [Re: ridgerunner] #5334551 01/28/20 10:17 AM
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JLTD Offline
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Sounds like a good solution… Especially if you're not running an extended interval.

You might also want to try 5W-30 to address the consumption.


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Re: Group 2 mix with Group 4 [Re: ridgerunner] #5334562 01/28/20 10:26 AM
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ridgerunner Offline OP
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I bought several gallons of the 0-20 so I am gonna run it. I did get some 5-20 SS as well once the 0-20 runs out. Would I ever buy SS again? Nah.

Last edited by ridgerunner; 01/28/20 10:26 AM.
Re: Group 2 mix with Group 4 [Re: ridgerunner] #5334753 01/28/20 02:49 PM
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Char Baby Online Content
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Use the oil that stays in your engine without having to add additional qts(or fewest additions) between changes.


"Retired"
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic 1.8 LX
Re: Group 2 mix with Group 4 [Re: ridgerunner] #5334792 01/28/20 03:49 PM
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Noticed some consumption with my Baja in signature starting around 75 -- 80 thousand miles. Used about half a quart in a 4-5 thousand mile OCI. Was using 5W30 conventional mostly. Switched to a HM 5W30 full synthetic and consumption stopped altogether. Current fill is Rotella T6 5W30 full synthetic and nearly 2 thousand miles in -- no oil loss on the dipstick.


2017 VW Jetta SE TSI 1.4L Turbo (hers)
PP Euro 0W40 & FU (42K)
2008 Acura TL 3.2L PPPP 0W20 & FU (114K)
2005 Subaru Baja AWD 2.5L N/A 5spd.
T6 MV 5W30 & FU (103K)
2000 Ram 4X4 5.2L (93K) T6 MV 5W30 & FU
Re: Group 2 mix with Group 4 [Re: ridgerunner] #5334940 01/28/20 07:48 PM
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It would be wise to use just any non "synthetic"that meets the specs.


2015 F150 2.7
2018 F350 6.2
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