Need Tips on Using 20 Weight Non Detergent Oil for My Classic Car

Classic & Vintage Cars
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Seeking Advice on 20 Weight Non Detergent Oil

I’m currently working on restoring my classic car from the 1970s and I’ve come across quite a bit of information regarding the use of 20 weight non-detergent oil. However, I’m still a little confused about its applications and specifications, especially in regard to older engines.

What is Non-Detergent Oil?

From what I’ve gathered, non-detergent oils don’t contain additives to suspend and remove sludge and contaminants like their detergent counterparts do. I know this was the norm for older engines, but I’m curious:

  • Is non-detergent oil still suitable for my 1970s engine?
  • Are there specific scenarios where it outperforms detergent oils?

Specific Use Cases

I’d love to hear from those who have experience with non-detergent oils:

  • How does the viscosity of 20 weight oil affect performance?
  • Are there any particular brands that are recommended for classic cars?
  • What about temperature conditions; does it hold up in different climates?

Where to Buy?

Additionally, if anyone could point me in the right direction for where to purchase this oil, that would be greatly appreciated. I’ve checked a couple of local auto shops, but I’m not sure if they carry what I need.

Thanks in advance for your help! Looking forward to hearing your insights!

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I’ve been using 20 weight non-detergent oil in my classic car for years. It really helps to keep the engine clean since it doesn’t contain additives that can sludge up the works.

3

That’s great to hear! Any tips on how often you change it? I’m new to this oil and want to be sure I’m doing it right.

4

I change mine every 3,000 miles. It may seem often, but with non-detergent oils, it’s best to keep it fresh to avoid buildup.

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I’m also curious! I’ve heard some people mention mixing it with other oils. Is that a good idea?

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Mixing can be risky. Non-detergent oils don’t play nice with detergent oils, which can lead to issues with engine cleanliness. Better to stick to one type.

7

What about using it in lawn mowers? I’ve got a classic one that I’d like to preserve…

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20 weight non-detergent oil is great for small engines like mowers! It helps reduce wear in older models.

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I use it in my compressor as well! It keeps everything running smoothly - no foaming or gunk buildup. Highly recommend it.

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That sounds promising! I might just try that in my old air tools too. Thanks for the tip!

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Just be careful with its viscosity! It’s thin, so if you’re using it in colder climates, consider a multi-weight for winter months.

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I’ve actually done that and my car didn’t start one winter! Lesson learned - stick to what’s recommended for your climate.

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On a lighter note, I guess my car just wanted a vacation that year!

14

Haha! Yeah, yeah, we’ve all been there with our cars trying to take unexpected breaks.

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Taking care of a classic car is truly a labor of love. Just keep researching and asking questions like you are now, and you’ll do great!

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Non-detergent oil is great for classic cars, especially if you want to preserve engine internals. It lacks additives that clean the engine, which is often better for older models that have seen wear and tear.

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Exactly! Detergent oils have additives that can disturb sludge and debris, potentially damaging older engines. Non-detergent oil keeps that stuff in place, which can be safer for classic engines.

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When should I switch between non-detergent and detergent oils? What are the specific scenarios for each?

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Great question! Non-detergent oil suits older cars that have accumulated sludge, while detergent oils are better for newer engines that need cleaning during use.

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Just to add a bit more, non-detergent oils can lead to buildup if not changed regularly. They’re excellent for classic cars, but don’t forget regular maintenance!