Tag Archives: castrol edge 5w20

Mazda MX-5: Miata Spring Maintenance

Been a while since I did any work on my car. For most of the winter I didn’t even drive it. But after starting anew job it’s once again my daily.

So at almost exactly 5k miles I got to do my first oil change of 2018.

Car feels great with fresh fluids. Over the last 5,025 miles no oil was burned by the engine, it was still fairly brown and viscous which is great. I’ll be putting about 100 miles a week on it now going to work, so I’m assuming next oil change will be end of the year.

Mazda MX-5 Miata Maintenance Day

Today was a good day!

After the post maintenance test drive my toddler nephew exclaimed: “Oh look it’s Mia and Tia!”

Last week at the Woodcliff Lake Cars & Coffee my buddy Bill with the NC1 Copper Red Soft Top said he needed an oil change, so I volunteered to do it for him. Great! Today was the day to do it, perfect weather… lots of time since it’s the weekend, and besides the oil change we flushed the rear diff too.

Bill’s NC is pushing 104k miles, so it’s got a few more than mine. The area where the trans pairs to the engine was a bit covered with oil, which I guess may be normal for that age. It certainly looks similar as my high mileage Ford Explorer that my mom drives. There was also a lot of grime on the engine cover so I spend much of the time cleaning as the actual oil change took very little time. Actually, it took us the longest to figure out where to jack the car up correctly since his has an Appearance Package with side skirts that stick out beyond the pinch welds that I normally jack my car by.

Here’s some pix:

(first shot with my new Samsung Galaxy J3 6 “budget” smart phone)

Bill’s Miata:

The dreaded Sports Appearance package side skirts… look good from a distance, make the car seem lower to the ground, but a bit tough to work with especially when jacking the car up (and having to remove the jack leaving jack stands in place to lift the other side).

I don’t know if these openings are supposed to look like that or the previous shops/mechanics cut a piece out to get to the jacking point

The wet spot at the joint of transmission and engine

Bill lowered his car 1 inch with Flyin’ Miata Stage 2 kit, so we definitely had to use 2×4’s to get the front high enough for my jack to slide under

All done, first test drive to Advance Auto to recycle old oil and to buy gear lube to flush the rear differential.

Thanks to the great deal at Advance Auto I posted about earlier I got a chance to use both Castrol EDGE and Castrol EDGE Extended Performance + K&N HP-1002 filters on Bill’s oil change and mine…

Back in the air and leveled for the diff flush.

I was hoping that the Castrol Syntrax I used in my car’s last diff flush was going to work out but it seems to me that the quality of Mobil 1 is better so I recommended Bill get Mobil 1 instead.

Discovered one of Bill’s end links had broken off it’s mounting point to the sway bar, so he is going to order some new ones. These are the same pieces that make the clunking sound on my car ever since we replaced my stock shocks with OEM Bilstein’s.

Off on another test drive to get a feel for the rear end of the car… all Good!

Thansk for stopping by Bill!

My car is next, this time I tried the Castrol EDGE Extended Performance to see how it compares to Castrol EDGE I used for the past two oil changes. I’m assuming there will be no difference because I really don’t intend on running the car for 15k miles before the next oil change. In fact I was about 500 miles short of 5k on this one and I have no regrets, I’d rather change it more frequently then less…

This is my 3rd oil change this year, not sure if one more will be necessary before winter time… depends how many races I volunteer.

Mazda MX-5: Oil Change at Almost 5,000 Miles with Castrol EDGE 5W20 and K&N HP-1002 Filter

Finally! Took advantage of a 59F winter day to do some oil changes in the household. First the 2012 Dodge Grand Caravan which just hit 3,500 miles since the last oil change in August and the Mobil 1 synthetic I put into it looked awfully black. Happy I didn’t wait longer to say 5,000 miles because it would have been unnecessarily dark. The van is only used for short trips and the start/stop engine wear probably contributed to the condition of the oil (as opposed to say higher highway mileage). The Miata too got an oil change earlier than what I planned. It was about 724 miles short of the 5,000 mile interval I have determined to be ideal for my Mazda. Like the van the oil was dark. I used Pennzoil Platinum 0W20 on the last oil change so I’m going to speculate that my car doesn’t  like this oil. It doesn’t burn it as in oil disappearing between oil changes, I never had to top off oil. But it certainly burns to change color from brown to very dark brown. It wasn’t all that black, but it was terribly dark.

Anyway, I’m excited about this oil change because finally I am using Castrol EDGE synthetic motor oil. I mentioned this oil several years ago when I first tried Mobil 1 and prior the time I started using Pennzoil Platinum in order to make an apples to apples comparison between the top readily available oils for my Miata. Sure there are other oils out there that some may consider “better” like Red Line or Royal Purple, but the premium trio: Mobil 1 / Pennzoil Platinum / Castrol EDGE are the most readily available and affordable options on the market here in New Jersey. So finally… Castrol EDGE is in!

My opinion about this oil will realistically be made about 5,000 miles from now when it’s time to replace the oil I just put in, but first impressions are good. There’s no difference in engine sound or feel since changing from Pennzoil Platinum to Castrol EDGE, so I’d say so far so good.

Here’s some pix:

It’s worth noting that I followed Chris’s advice and only hand tightened the K&N HP-1002 filter. Unlike in the past when I turned the 1 inch wrench to tighten it and noticed oil seepage on the top of the filter where it bolts up to the engine, there was none of that this time where Chris did the last oil change for me. So I looked at the way the filter say after he did it, and tried to match the same with my oil change. Looking up at the filter you see just the white side, none of the K&N stickers are visible. That seems to work best. It’s nice and tight by hand-tightening, and that seems to work well.

I also took the time to adjust my front license plate Cravenspeed mount. Lately after driving on the highway it seems the wind was moving the plate out of position (it was askew) so I lowered it about half an inch down to also match the way Chris has it on his car. I think it does look great. Hopefully it sits in place as it should.

Mazda MX-5: Oil Change at 5,000 miles with Pennzoil Platinum 0W20 and K&N Filter HP-1002

Update: (Feb 2017) I wasn’t sure what was causing the car to act weird after this maintenance session at Chris’s house. Now that some time and mileage have passed I think I figured it out. And the result is a few issues. 1). part of the problem was the fact we overfilled the transmission fluid during the flush. There was an issue we found with proper checking of the level (which required running the car to get it warm, and then opening the check valve). 2). my car doesn’t seem to like 0W20 weight oil. I posted a few times that I don’t like Mobil 1 and now I can add Pennzoil Platinum 0W20 to the list. Both Mobil 1 and Pennzoil Platinum 0W20 turned real dark at just about 5k miles which shouldn’t happen. This makes me believe I should totally stick to 5W20 from now on. I’ve changed out the Pennzoil from this post with Castrol EDGE 5W20 and car feels absolutely perfect!


I don’t think I’ve ever had an oil change party with friends until this weekend, where my buddy Chris with a 2008 Silver NC1 GT PRHT offered to help me flush most of the fluids on my car while performing the same service on a bunch of cars in his household.

The plan was to flush the power steering fluid and fill it fresh with Mobil 1 ATF. Flush the Automatic transmission fluid with Pennzoil Platinum High Mileage ATF, and finally change my oil with Pennzoil Platinum 0W20 that I’ve had sitting at my home since about this time last year when I got the crazy deal from Advance Auto on two sets of oils (one 5W20 which I used up during spring, followed by two more Pennzoil Platinum 5W20 changes that I bought during the summer and now for the winter decided to go with thinner 0W20).

I’ll make separate posts for each maintenance item, so click on whatever interests you most:

I must admit that after doing all these fluid changes the car feels a bit weird and I can’t really pin point what the issue is. I’m sure it is fluid related because there’s a faint drone coming from either the engine or the transmission. Note to self: next time do one fluid flush at a time so if there is an issue like this it is easier to narrow down.

But back to the oil change party at Chris’s house.

The day started with a trip to the Subaru dealership to pick up an oil filter for his XV… then Chris changed his ’08 NC’s oil using Castrol Edge 5W20 Extended which I’d like to try in my car at some point in the future once Pennzoil stops being so cheap with all of their promos. While Chris’s brother Eric did an oil change on his Mazda RX-8 Rotary with Castrol Edge 10W30.

My car was last and oil was basically the last thing we did to it, but since it was the easiest job I’ll write about it first.

I was curious to see how Chris does his oil changes and for someone so meticulous as he is, he does it very differently than I do. He jacks the front, keeps the oil cap on, undoes the drain plug, the filter, and re-installs the drain plug with a new bolt that I picked up at a local Mazda dealer for $7.99 accompanied with a $1.65 crush washer. In all the oil changes I’ve done to my car to date I never changed the nut and the washer, but since Chris was doing my car for me, I had him do the same thing he does to his car, so mine also received the new bolt and crush washer. I typically jack the car up and put it on jack stands and when the fluid drains, I lower the passenger side so more of the dirty oil comes out. Chris doesn’t do that himself, which I found to be pretty interesting. Chris was surprised that his car took more Castrol Edge oil than it normally does using Mobil 1 oil which he has used in the past. Mine took the standard amount of Pennzoil that I typically use, which is just above 4.5 QT.

Some pix from the day:

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My supplies, Pennzoil Platinum 0W20, new Mazda bolts and washers and a K&N HP-1002 filter.


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Chris’s supplies Castrol Edge 5W20 Extended Performance oil with Mobil 1 M1-102 filter.


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Eric’s choice: Castrol Edge 10W30 Extended Performance oil.

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Seeing the RX-8 up close and personal made me appreciate that car a bit more, it’s surprising how massive it is compared to the Miata

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Also pretty incredible how tiny yet thirsty the Rotary engine is.

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It felt good to finish up the day with the easiest job of the evening, the oil change… (which happened around midnight… Yikes!)

Now if only I could figure out why is my engine running louder on 0W20 compared to 5W20 and why there’s this faint shimmy going on that I could feel at highway speed which seems to come from the front of the car, around the engine area. (or possible the trans).

Click here to read about the tranny fluid flush or here for power steering fluid flush.