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oil Change on my 521


A_Racing_Driver

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I would suggest Delo. It's a little heavy as it's 15-40, but it has all the wonderful zinc additives that will keep your motor happy. And if your motor is tired at all, then the heavier oil will just be a bonus.

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To be clear do NOT use a fram filter. I think the Ford 4.9 liter inline six works and the chev small block. If you look, the threads for most all filters are the same just the placement of the flat rubber O ring is different, well other than those really small filters. I used to just find one that fits and was cheaper. But get a WIX or NAPA Gold you can't go wrong. 

 

Our cam and rocker arm needs lots of scuff protection. For this a zinc additive ZDDP is used. Today's cars use a roller rocker arrangement and catalytic converters that don't like the ZDDP level that is in the oil, so oil makers have been reducing the levels slowly over the years. I err on the side of caution and run 15W40 Shell Rotella T (Chevron Delo400 is similar) This is a 'light' diesel oil that is allowed the same high levels of ZDDP in the formula.  

 

I would not use any oil below 10W unless the temps are continuously sub zero -18C. Get a block heater for easier starts.

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So Its probably not a bad idea to do an oil change on my 521 lol, but what filter will work and oil? I feel like the books in the store don't go back to 1970 so what works? Also what oil should I use I live in Canada so the weather goes from pretty cold to hot. thanks

I also live in Canada, but the milder Westcoast. I run Delo 15w 40 in everything I own. I've owned commercial trucks my whole working career and have run nothing but Chevron Delo. I run it in my boat, motorhome, GM Yukon,VW, my motocross bikes and most importantly my '68 520! The only vehicle I don't run it in is my BMW, that gets strictly synthetic.

As for your filter, I'm not sure. If you keep your oil changed when due, I don't think it really matters what filter you run. This is coming from someone who has changed their own oils/ filters for 30 years.

Good Luck!

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  • 7 years later...
On 2/9/2016 at 7:40 PM, datzenmike said:

To be clear do NOT use a fram filter. I think the Ford 4.9 liter inline six works and the chev small block. If you look, the threads for most all filters are the same just the placement of the flat rubber O ring is different, well other than those really small filters. I used to just find one that fits and was cheaper. But get a WIX or NAPA Gold you can't go wrong. 

 

Our cam and rocker arm needs lots of scuff protection. For this a zinc additive ZDDP is used. Today's cars use a roller rocker arrangement and catalytic converters that don't like the ZDDP level that is in the oil, so oil makers have been reducing the levels slowly over the years. I err on the side of caution and run 15W40 Shell Rotella T (Chevron Delo400 is similar) This is a 'light' diesel oil that is allowed the same high levels of ZDDP in the formula.  

 

I would not use any oil below 10W unless the temps are continuously sub zero -18C. Get a block heater for easier starts.

so you use 15W40 SHell Rotella and the ZDDP?

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28 minutes ago, Montzzz said:

so you use 15W40 SHell Rotella and the ZDDP?

 

It already has the correct ZDDP level that why I use it.

 

26 minutes ago, Montzzz said:

what motor is in a 71 521?

 

L16 that a 1.5 liter L series engine.

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