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Recommendation for a high mileage engine #5394650 04/05/20 03:36 PM
Joined: Apr 2020
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K
khouan Offline OP
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K
Joined: Apr 2020
Posts: 1
So I've been looking through a the forums and haven't really found a clear answer.

I have a 1985 Toyota Celica Supra with 240k miles never rebuilt still running fine with minor oil leaks. I'm planning to do my first oil change since I bought it and am not sure what type of oil the previous owner used.

I've had a few people tell me to be sure to use an oil with zddp added.

After doing some research it sounds like I should be using a high mileage version of oil. But most of the high mileage oils seem to be synthetic? I though switching to synthetic in such an old engine would cause more leaks?

I'm thinking of M1 high mileage, Valvoline MaxLife or maybe Royal Purple HMX? The only concern I have is that these are all full synthetic.

My question is what oil would you guys recommend thats for high mileage engines with zddp added? 10w-40 range.

Re: Recommendation for a high mileage engine [Re: khouan] #5394673 04/05/20 04:07 PM
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Jackson_Slugger Offline
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I'd go with Mobil 1 High Mileage 10W-40. No, it won't cause leaks...

Re: Recommendation for a high mileage engine [Re: khouan] #5394712 04/05/20 04:49 PM
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Triple_Se7en Offline
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2019 Hyundai Santa Fe 2.4 GDI - Pennzoil Ultra Platinum 5w30 / OEM 35504 Filter
2020 Kia Soul X-Line 2.0 MPI - a 50-50 blend of Pennzoil Platinum HM & Pennzoil Gold 5w30 // AC Delco PF1127 Ecore




Re: Recommendation for a high mileage engine [Re: khouan] #5394737 04/05/20 05:06 PM
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tiger862 Offline
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Valvoline Maxlife


Tiger862
2018 Grand Caravan
Re: Recommendation for a high mileage engine [Re: tiger862] #5394788 04/05/20 05:59 PM
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Malo83 Offline
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Pennz High Mileage is all you need. cheers

Re: Recommendation for a high mileage engine [Re: khouan] #5394814 04/05/20 06:27 PM
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Posts: 763
NavyVet88 Offline
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Different answers all the way around lol

Op, use which ever of those oils you want. They will all do the job.


2013 Honda Civic LX 1.8L 178k M1 HM 0w20 with Fram XG7317
2002 Ford Ranger Edge 3.0L 67k Castrol Edge 5w30 with Fram XG3600
Maintenance Technician by trade, working class for life.
Re: Recommendation for a high mileage engine [Re: khouan] #5394872 04/05/20 07:28 PM
Joined: Jul 2017
Posts: 1,467
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OilUzer Offline
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I would use conventional 10W40 and change it more often. May also try syn-blend and see how it does. In CA, I would stick with 10Wx. Could also try 10W30.

I haven't had a good luck with full syn or even syn-blend in old cars.
Maybe just a coincidence ... idk

Re: Recommendation for a high mileage engine [Re: khouan] #5394945 04/05/20 09:10 PM
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Posts: 6,289
JohnnyJohnson Online Content
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I would try some Valvoline Maxlife that's what I'm using in my stepdaughters 94 Mazda with 265K miles on it.

Last edited by JohnnyJohnson; 04/05/20 09:21 PM.

2004 Corolla 140116
Out: Havoline Pro DS 10w-30 Purolator PureOne 10-29-19 136457
In: Pennzoil Platinum HM 5W-20 ST 4386
2006 Duramax 77077
Out: T6 5W-40 XG9100 73909
In: Rotella Dino PH9100 11-3-19
Re: Recommendation for a high mileage engine [Re: khouan] #5394993 04/05/20 10:12 PM
Joined: Feb 2008
Posts: 1,231
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umungus1122 Offline
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Just use a HM conventional. From personal experience synthetics will exacerbate a leak. Especially a RMS leak. Have had it happen on several SBCs and 4.0 I6s with high miles and minor leaks
.


'95 Chevy 1/2t 305 208k -NexGen Maxlife 5w-30, Wix filter
'04 Crown Vic 95k Maxlife full syn 5w-20
Re: Recommendation for a high mileage engine [Re: umungus1122] #5395141 04/06/20 05:44 AM
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Randy_R Offline
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Valvoline maxlife synblend. No added ZDDP. That’s what kills catalytic converters.


2018 Mazda CX-5 9000 miles Zepro advanced moly 0W-20 Mazda filter
08 Saturn VUE AWD 3.5 V6 70,000 miles Schaeffer 9000 5W30 Wix 51522XP
65 Pontiac Tempest 355 Chevy Schaeffer Racing 10W30 Wix 51061
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