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Was this the old SN formula of the FS though? I don't think the new SP version (called Mobil 1 "Triple Action Power +" in Oz) has the same cleaning ability

We have the 5w30 and 10w40 available in Australia - I have used the 10w40 mostly (it is a popular weight here!)

Former EJ owner here - Penrite Racing 10w40 or Penrite ten tenths 0w40 depending on your use case.

I didn't expect this thread to turn into such a debate! By way of further background - I've used Valvoline Restore and Protect on all of my vehicles for one purpose only - Cleaning piston ring deposts. Unfortunately, I never pulled the valve cover when I acquired the RX330 so I have no pre...

In my ownership (30k miles) I would change the oil every 2000-3000 miles. A little excessive, but cleaning the unknown was the objective and plan on extending these intervals out. Currently running my second last bottle of Mobil 1 0w40 SN and intend to leave this in for 4000-5000 miles

Hi all - Picture attached of my RX330 front valve cover. I was surprised to see this varnish. Previous owner had a history of taking it to the dealer every 6 months. I have been changing oil every 4-5months which has included 4 oil changes with Valvoline Restore and Protect. Thinking of running...

Interesting UOA - Would I be doing more harm than good if I added Ceratec or Archoil 9100 to boost boron/moly (or Boron/Potassium in the case of Archoil)? I'm guessing these additives could compete with the Calcium.

I wish it was; and it certainly does - My photography isn't the best under there whilst covered in oil!

Here it is - The photo isn't as nice as I'd hoped but if you look closely, just above the feed hole, you can see the result. (If you have any objections I will polish it again!)

Update: I have now addressed the scratch and I am reasonably optimistic about the results. It is less pronounced, still catches my finger a little (notably less) and I believe it has no high spots. To check for high spots, I used and discarded two new honda bearings (including one "too thick")...

@Cujet Pics as requested! Only modifications are an engine torque damper, a few chassis braces, good coilovers and a greddy spectrum elite exhaust. Its running a052s on the factory wheels

Cujet, I'm very appreciative of your advice. I'd like to run my plan by you and ask some follow up questions. 1. Block the oil feed hole with a "gun cleaning patch" covered in lithium grease - the intention is that the grease makes it stick. 2. Using the same lithium grease covered patches...

No I don't blame you for asking the question - was trying to do the right thing by the car. High lead readings after multiple used oil analysis - Already running the thickest oil possible. Save for user error causing the damage it would have been worthwhile.

Oh! Nice to hear from a former s2000 owner! Sounds like it was a lot of fun 😅 I'll send some pictures on my way to work tomorrow - I have been losing sleep over that scratch after hearing about how it is near impossible to restore the factory crank due to its hardened coating. Its nearly 2am...

Will do!!

Thanks both - I did also have high fuel dilution in the last oil analyis. Not to spin out this thread, but I also found (or caused) a scratch (finger nail catches) in the seemingly excellent condition crank. I'm thinking of polishing on the scratch only; and leaving the rest of the crank alone...

Hi all, A couple of elevated Lead readings on my used oil analysis have caused me to take the pan off to inspect and replace rod bearings. In the process, I found some strange black fluid at the bottom of the pan and also in small amounts when cracking open rod bolts. It also smells strange...

Apologies for the double post - Looking back on the used oil analysis, it seems like I have had an intermittent but recurring problem with Lead levels to varying degrees. Not sure what to do from here - Thinking no additives (maybe just sta bil) where possible and resample at a short interval.

Hi all - Its been a while since I have sent off a used oil analysis for this vehicle, but thought I would update with an interesting used oil analysis. In short, the vehicle doesn't get driven as often as it used to as I have been busy. Almost all the kilometers on this sample are hard, track...

Try Nulon Racing 10w60. I use their 5w40 in my s2000