What oil would you choose?

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Dec 12, 2025
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I chose to buy a 6 cylinder Ford F150 Raptor competitor called a Ram 1500 RHO. The manual recommends selecting an oil that meets MS-A0921 (Mopar Standard) but will allow any fully synthetic SAE 0W-40 engine oil that has the API Donut trademark with a certification level of API-SP or later. API-SN+ is also acceptable.

MS-A0921, Fully Synthetic, SAE 0W-40

Mopar (only at dealers)
Pennzoil Ultra Platinum (very easy to get at reasonable prices)

Also allowed because - Fully Synthetic, SAE 0W-40, API-SP or API-SN+

Mobil 1 FS 0W-40 (European Formula)
Mobil 1 Supercar 0W-40
Pennzoil Platinum Euro Full Synthetic 0W-40 (API-SN+)
Castrol EDGE 0W-40
Castrol EDGE Euro 0W-40 (API-SN+)
Valvoline European Vehicle Full Synthetic 0W-40
Liqui Moly Synthoil Premium 0W-40
Liqui Moly Leichtlauf High Tech 0W-40 (API-SN+)
AMSOIL Signature Series 0W-40
Royal Purple High Performance 0W-40

I am probably going to choose Pennzoil Ultra Platinum that meets MS-A0921 and API-SP for $7.98/quart incl shipping. What are your thoughts?
 
I chose to buy a 6 cylinder Ford F150 Raptor competitor called a Ram 1500 RHO. The manual recommends selecting an oil that meets MS-A0921 (Mopar Standard) but will allow any fully synthetic SAE 0W-40 engine oil that has the API Donut trademark with a certification level of API-SP or later. API-SN+ is also acceptable.

MS-A0921, Fully Synthetic, SAE 0W-40

Mopar (only at dealers)
Pennzoil Ultra Platinum (very easy to get at reasonable prices)

Also allowed because - Fully Synthetic, SAE 0W-40, API-SP or API-SN+

Mobil 1 FS 0W-40 (European Formula)
Mobil 1 Supercar 0W-40
Pennzoil Platinum Euro Full Synthetic 0W-40 (API-SN+)
Castrol EDGE 0W-40
Castrol EDGE Euro 0W-40 (API-SN+)
Valvoline European Vehicle Full Synthetic 0W-40
Liqui Moly Synthoil Premium 0W-40
Liqui Moly Leichtlauf High Tech 0W-40 (API-SN+)
AMSOIL Signature Series 0W-40
Royal Purple High Performance 0W-40

I am probably going to choose Pennzoil Ultra Platinum that meets MS-A0921 and API-SP for $7.98/quart incl shipping. What are your thoughts?
Mobil1 0W40 FS.
Available at Wal Mart, cheap, very good oil! People track all the time with that oil.
 
I chose to buy a 6 cylinder Ford F150 Raptor competitor called a Ram 1500 RHO. The manual recommends selecting an oil that meets MS-A0921 (Mopar Standard) but will allow any fully synthetic SAE 0W-40 engine oil that has the API Donut trademark with a certification level of API-SP or later. API-SN+ is also acceptable.

MS-A0921, Fully Synthetic, SAE 0W-40

Mopar (only at dealers)
Pennzoil Ultra Platinum (very easy to get at reasonable prices)

Also allowed because - Fully Synthetic, SAE 0W-40, API-SP or API-SN+

Mobil 1 FS 0W-40 (European Formula)
Mobil 1 Supercar 0W-40
Pennzoil Platinum Euro Full Synthetic 0W-40 (API-SN+)
Castrol EDGE 0W-40
Castrol EDGE Euro 0W-40 (API-SN+)
Valvoline European Vehicle Full Synthetic 0W-40
Liqui Moly Synthoil Premium 0W-40
Liqui Moly Leichtlauf High Tech 0W-40 (API-SN+)
AMSOIL Signature Series 0W-40
Royal Purple High Performance 0W-40

I am probably going to choose Pennzoil Ultra Platinum that meets MS-A0921 and API-SP for $7.98/quart incl shipping. What are your thoughts?
Just to add, Ultra Platinum is not of same performance levels as most oils you listed. Look for oils that have MB229.5 approval. Ultra does not!
 
I chose to buy a 6 cylinder Ford F150 Raptor competitor called a Ram 1500 RHO. The manual recommends selecting an oil that meets MS-A0921 (Mopar Standard) but will allow any fully synthetic SAE 0W-40 engine oil that has the API Donut trademark with a certification level of API-SP or later. API-SN+ is also acceptable.

MS-A0921, Fully Synthetic, SAE 0W-40

Mopar (only at dealers)
Pennzoil Ultra Platinum (very easy to get at reasonable prices)

Also allowed because - Fully Synthetic, SAE 0W-40, API-SP or API-SN+

Mobil 1 FS 0W-40 (European Formula)
Mobil 1 Supercar 0W-40
Pennzoil Platinum Euro Full Synthetic 0W-40 (API-SN+)
Castrol EDGE 0W-40
Castrol EDGE Euro 0W-40 (API-SN+)
Valvoline European Vehicle Full Synthetic 0W-40
Liqui Moly Synthoil Premium 0W-40
Liqui Moly Leichtlauf High Tech 0W-40 (API-SN+)
AMSOIL Signature Series 0W-40
Royal Purple High Performance 0W-40

I am probably going to choose Pennzoil Ultra Platinum that meets MS-A0921 and API-SP for $7.98/quart incl shipping. What are your thoughts?
I would go with the Liqui Moly Leichtlauf High Tech 0W-40 (API-SN+) first, next would be the Castrol Edge Euro and if money is an issue, then Pennzoil Platinum Euro.
 
I have a 2019 Raptor with the twin turbo v6. I’ve opted for Mobil 1 0w40 fs euro. So far no issues either in 95 degree weather or sub zero temperatures. Easy to get at Walmart. Pair it with a Mobil filter.
 
I am probably going to choose Pennzoil Ultra Platinum that meets MS-A0921 and API-SP for $7.98/quart incl shipping
For that price, I'd just get AMSOIL Signature Series personally. You can probably bump up to 5W-40 unless you're starting below -25F or so. You can get AMSOIL Signature Series for around 10.49/quart when buying the case of 4 gallon jugs. You have a high end, performance truck. Looks like it starts around $70k. I'd personally give it the best. The difference between Pennzoil Ultra Platinum and AMSOIL Signature Series for the lifetime of the truck is probably less than what you're paying in interest and insurance for a month.

Edit: nevermind, I double checked, and there's no SS 5W-40. 0W-40 then. You've got a 500+ HP engine. AMSOIL Signature Series or a Euro oil if I were you.
 
I chose to buy a 6 cylinder Ford F150 Raptor competitor called a Ram 1500 RHO. The manual recommends selecting an oil that meets MS-A0921 (Mopar Standard) but will allow any fully synthetic SAE 0W-40 engine oil that has the API Donut trademark with a certification level of API-SP or later. API-SN+ is also acceptable.

MS-A0921, Fully Synthetic, SAE 0W-40

Mopar (only at dealers)
Pennzoil Ultra Platinum (very easy to get at reasonable prices)

Also allowed because - Fully Synthetic, SAE 0W-40, API-SP or API-SN+

Mobil 1 Full Synthetic 0W-40 (European Formula)
Mobil 1 Supercar 0W-40
Pennzoil Platinum Euro Full Synthetic 0W-40 (API-SN+)
Castrol EDGE 0W-40
Castrol EDGE Euro 0W-40 (API-SN+)
Valvoline European Vehicle Full Synthetic 0W-40
Liqui Moly Synthoil Premium 0W-40
Liqui Moly Leichtlauf High Tech 0W-40 (API-SN+)
AMSOIL Signature Series 0W-40
Royal Purple High Performance 0W-40

I am probably going to choose Pennzoil Ultra Platinum that meets MS-A0921 and API-SP for $7.98/quart incl shipping. What are your thoughts?
Those all would be good. I'd also add Quaker State and Havoline 0w40 to the list. I think they make 0w40 or 5w40 Euro oils. I suggest choosing an oil you can get from Walmart for a resonable price.

If NAPA offers NAPA brand 0w40 then add that to your list. NAPA oil is Valvoline oil. As for filter, I recommend NAPA Gold.

You might also want to put a pair of (reusable) Filtermag SS on the oil filter to remove more ferrous particles from the oil. In the 3rd photo you can see a cut open oil filter can. On the inside of the can you can see the ferrous metal particles that the magnets captured.

filtermag.webp


filtermag2.webp


filtermag3.webp
 
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Those all would be good. I'd also add Quaker State and Havoline 0w40 to the list. I think they make 0w40 or 5w40 Euro oils. I suggest choosing an oil you can get from Walmart for a resonable price.

If NAPA offers NAPA brand 0w40 then add that to your list. NAPA oil is Valvoline oil. As for filter, I recommend NAPA Gold.

You might also want to put a pair of (reusable) Filtermag SS on the oil filter to remove more ferrous particles from the oil. In the 3rd photo you can see a cut open oil filter can. On the inside of the can you can see the ferrous metal particles that the magnets captured.

View attachment 315558

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I did not know about this, product, but definitely seems interesting
 
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