Hard Dog Fabrication

Royal Purple

Royal Purple 5W30 Synthetic Oil

[9/30/2010] Reviewed by: Andrew Albanese - awla.tmg@gmail.com

Applicable to: '90 - '97 1.8 liter

Synthetic oil with proprietary additives

I had switched to synthetic with Mobil1, hoping I would feel a difference. With M1, I noticed nothing, was still noisy on the colder mornings, lifter tick still prominent until the engine warmed up, and idle took as long as it takes with dinosaur oil to 'settle down' after start up. I read Racing Beat's post about Royal Purple and decided to give it a shot (it was considerably more expensive than M1, which I believe was on sale). Although having only driven a few hundred kilometres, I can definitely say RP certainly does make a difference. I chose 5w30 this time because the weather is changing, and winter is quickly approaching. When I start it in the morning, the idle settles very quickly, and the lifter tick hasn't come back for an encore. RP claims horsepower improvement potential, but I don't really feel any difference. However, my Scangauge Xgauge horsepower reading does show approx 1-3 BHP increase at 7200rpm. I know the scangauge is not the most accurate way to cal! culate these things, but the numbers have shown a difference. The engine also seems to deliver its power more effortlessly, and behaves much better when not fully warmed up than it did with any other oil I've used. I'm sticking to RP, I believe this is the oil I was looking for.

Not an installed item


Royal Purple 10W30 Motor Oil

[4/29/2003] Reviewed by: Peter O'Cain

Applicable to: '90 - '97 1.8 liter

Royal Purple 10W30 motor oil

The product definitely quieted my valve train noise, especially in the morning. First start of the day is much quieter and I recommend the product for this purpose. Horsepower improvement could not be noticed, although I've seen the product dyno tested on television and there was about a five horsepower improvement after replacing tranny, motor and rear-end fluids with the stuff (who knows?). Costs about $4.50 per quart, so it's not cheap. I was running Castrol GTX prior to Royal Purple and noticed a major reduction in engine noise.

Under 30 minutes to remove completely


[5/6/2002] Reviewed by: Scott Robinson - Drrobsc@aol.com

Applicable to: '99 + 1.8 liter

royal purple 10w30 synthetic engine oil

excellent. I had the lifter noise common to many '01's and the forums usually recommend going to thinner dino oil i.e.5w30, or synthetic. Royal Purple claims slight(1-5%)hp gain. If there is I couldn't/didn't notice, but lifter noise completely gone, and valvetrain noise is slightly quieter at full throttle. It added about 30$ to price of oil change but manufacturers only recommend changing every 10-18k. I doubt I'll go that long, but even at 3-5k intervals the lack a clatter in the AM is worth it.

check out royalpurple.com for their propaganda, which sounds convincing

Not an installed item


Back to Product Reviews 13 March, 2011


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