Recent content by es

Thanks everyone for your advice. I've checked the PCV and it seems working. I've cleaned up the varnish on the dipstick and will be closely monitoring for re-occurance. If it happens again, I guess I'll be switching over to GC.

I wouldn't consider my driving taxing - about 60% of my journey is on freeway. Minimal traffic jams or prolonged idling. I would rather spend a little more on the oil to drag the OCI out to 6K miles. Depends how you see it... Many people over here change their cars before it hits 100,000 miles...

I have always been a little uncomfortable with RP thinning out but I my main concern was engine wear. I was previously on Castrol SLX (the A1 variant) and was tempted by RP because of price. I'll check the engine ventilation system for problems but this problem may cause enough FUD (Fear...

Nope, I'm running on unleaded RON92. Thanks, I'll check the PCV system.

Hi everyone, I've been using Royal Purple 10w30 for 30,000 miles now (OCI 6000 miles) and have some varnish forming on my dipstick above the oil line. From my previous UOAs (here) and general feedback, I've been a little worried about the oil thinning out. Wear numbers were ok so I continued...

I picked up 2 bottles too (for my ARX clean and rinse phases)

I cover about 25,000 miles a year. With car prices so high over here (a Japanese 1.6l car goes for around US$40,000+), I'm trying to keep my car running as long as possible. You do get a rebate for deregistering your car before it's 10 years old, but that's 200,000 miles away.

Hi Ian, Since many (if not most) posts here use miles, I don't mind doing the conversion for the convenience of others. Changed from K&N back to OEM but didn't get much of a difference. All the signs don't suggest dirt problems. Decided not to. The reason I started doing UOAs was to see if I...

I guess it brings up the accuracy versus consistency argument, and why trending is important. The lab in question is ALS (Australian Laboratory Services) Chemex Singapore, which is affiliated with the global WearCheck organization. I'm pretty happy with their service so far. I might just be...

Hmm... but what consistent errors. Testing in Singapore is MUCH more convenient. No postal issues, no payment issues, quick turnaround, lower cost. I actually started doing a UOA to see if changing to a cheaper oil would save me some money

New tubing for every sample. Sample container is new and looks clean. I didn't wash it - maybe I should. Tube end is cut at an angle (has a pointed end). Tube is inserted to dipstick length. Oil is sampled within 5 minutes after shutdown. I should just do a sample from the drain plug to settle...

Seal and gasket material?

I live in Singapore and RP seems to be a real bargain here compared to M1 and Castrol SLX. A case of 12qts of RP cost me about US$71 - that breaks down to about US$5.92 per qt. The 4 litre bottle of M1 with supersyn costs about US$44 - US$10 per qt. Castrol SLX goes for about the same price as...

Hi everyone, This is my third UOA. 80% of distance covered is on freeway. The weather here in Singapore is warm and it rains a lot. The 3ZZ-FE engine in my Corolla has an aluminium block and head with cast iron liners. All samples were taken by a pumping via a plastic hose inserted down the...

It's actually 11,000 km