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2.5 cr engine oil used ?
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Old 16-12-2016, 07:28 AM
jonney jonney is offline
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Default 2.5 cr engine oil used ?

Hi guys, now that its getting warmer just wondering what engine oil weights you guys are running or going to run in your 2.5 litre navs? i have been using penrite 5w - 40 but thinking now to use 10 w - 40 just abit thicker for the extra heat.
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Old 18-12-2016, 09:41 PM
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Default Engine Oil Weight

Good Morning!

My Lady is a 87 model D21, with a SD-25 Diesel, and I changed my oil yesterday,
I fitted "Penrite 20-60 as recommended by Penrite to me for Her age and the
Moderate Speeds we travel at, She idles at twenty PSI and runs with the slower traffic at 46 PSI oil Pressure, and burns no oil at all between Oil Changes!
Hope this might be of assistance to you and others,
Merry Xmas to you all!

Highway Man!
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Old 19-12-2016, 12:26 AM
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I have a 2010 d22 yd25 and get roughly the same as above, according to my recently fitted oil pressure gauge. That is with chief 5w30 oil. I will keep an eye on it as the temperature warms up, but I get the same pressures as above after a 40km freeway run from home to work. I will be doing a 5 hour trip to Paynes find after Christmas, so will have an idea of how it goes out on the highway in some decent heat and will post results after that.
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Old 19-12-2016, 09:01 AM
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The YD25 runs an oil cooler which uses the engine coolant to keep the oil at around 86 degrees. If your cooling system is up to scratch then you will have no issues with your oil getting hot no matter the temperature or climate
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Old 19-12-2016, 09:50 AM
jonney jonney is offline
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the water cooling may keep the engine oil abit cooler but a good oil cooler is the ticket for cooler engine oil. i still feel the need to use a slightly thicker engine oil in the hot summer months as opposed to the colder winter months etc. thinner for winter thicker for summer. what do you reacon ?
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Old 19-12-2016, 12:43 PM
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I run a remote oil cooler on my engine and the oil temp doesn't move above 170F. Yeah the thinner oil might be better in winter for cold starts. You need to remember that modern fully synthetic motor oil is a hell of a lot better than the old mineral oil available 30 years ago. You can get away with longer service intervals and it maintains correct viscosity over a larger range of engine temps. I personally run 5W - 40 but any 5W - 30 or 10W - 30 or even 10W - 40 will be fine in a YD25
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Old 20-12-2016, 09:00 AM
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Quote:
Originally Posted by jonney View Post
Hi guys, now that its getting warmer just wondering what engine oil weights you guys are running or going to run in your 2.5 litre navs? i have been using penrite 5w - 40 but thinking now to use 10 w - 40 just abit thicker for the extra heat.
Just use whatever the book specifies. Prolly better to stick to what youv'e been using.
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Old 20-12-2016, 10:11 AM
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^What he said!, and as the capacity of the YD25 in D22 form is a pissy 4.3ltrs changing every 5k is a must.
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Old 20-12-2016, 10:29 AM
jonney jonney is offline
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yeh john i do change my oil and filter every 5k but was thinking should i change to a slightly thicker oil for thie hot summer approaching. as mentioned currently running 5w -40 semi synthetic penrite so maybe try 10w -40.
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Old 20-12-2016, 11:11 AM
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You can only try it, everyone knows Penrite is good shit!.
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Last edited by happy john; 20-12-2016 at 11:35 AM.
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